[CRYPTO] gcm: New algorithm

Add GCM/GMAC support to cryptoapi. GCM (Galois/Counter Mode) is an AEAD mode of operations for any block cipher with a block size of 16. The typical example is AES-GCM. Signed-off-by: Mikko Herranen <mh1@iki.fi> Reviewed-by: Mika Kukkonen <mika.kukkonen@nsn.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

[CRYPTO] gcm: New algorithm
Add GCM/GMAC support to cryptoapi. GCM (Galois/Counter Mode) is an AEAD mode of operations for any block cipher with a block size of 16. The typical example is AES-GCM. Signed-off-by: Mikko Herranen <mh1@iki.fi> Reviewed-by: Mika Kukkonen <mika.kukkonen@nsn.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Mikko Herranen · Herbert Xu
1 parent e3a4ea4fd2
Showing 5 changed files with 848 additions and 0 deletions Side-by-side Diff
crypto/Kconfig
crypto/Makefile
crypto/gcm.c
crypto/tcrypt.c
crypto/tcrypt.h
@@ -206,6 +206,15 @@
 	  CTR: Counter mode
 	  This block cipher algorithm is required for IPSec.
  
+config CRYPTO_GCM
+	tristate "GCM/GMAC support"
+	select CRYPTO_CTR
+	select CRYPTO_AEAD
+	select CRYPTO_GF128MUL
+	help
+	  Support for Galois/Counter Mode (GCM) and Galois Message
+	  Authentication Code (GMAC). Required for IPSec.
+
 config CRYPTO_CRYPTD
 	tristate "Software async crypto daemon"
 	select CRYPTO_ABLKCIPHER
@@ -33,6 +33,7 @@
 obj-$(CONFIG_CRYPTO_LRW) += lrw.o
 obj-$(CONFIG_CRYPTO_XTS) += xts.o
 obj-$(CONFIG_CRYPTO_CTR) += ctr.o
+obj-$(CONFIG_CRYPTO_GCM) += gcm.o
 obj-$(CONFIG_CRYPTO_CRYPTD) += cryptd.o
 obj-$(CONFIG_CRYPTO_DES) += des_generic.o
 obj-$(CONFIG_CRYPTO_FCRYPT) += fcrypt.o
+/*
+ * GCM: Galois/Counter Mode.
+ *
+ * Copyright (c) 2007 Nokia Siemens Networks - Mikko Herranen <mh1@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <crypto/algapi.h>
+#include <crypto/gf128mul.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#include "scatterwalk.h"
+
+struct gcm_instance_ctx {
+	struct crypto_spawn ctr;
+};
+
+struct crypto_gcm_ctx {
+	struct crypto_ablkcipher *ctr;
+	struct gf128mul_4k *gf128;
+};
+
+struct crypto_gcm_ghash_ctx {
+	u32 bytes;
+	u32 flags;
+	struct gf128mul_4k *gf128;
+	u8 buffer[16];
+};
+
+struct crypto_gcm_req_priv_ctx {
+	u8 auth_tag[16];
+	u8 counter[16];
+	struct crypto_gcm_ghash_ctx ghash;
+};
+
+static void crypto_gcm_ghash_init(struct crypto_gcm_ghash_ctx *ctx, u32 flags,
+				  struct gf128mul_4k *gf128)
+{
+	ctx->bytes = 0;
+	ctx->flags = flags;
+	ctx->gf128 = gf128;
+	memset(ctx->buffer, 0, 16);
+}
+
+static void crypto_gcm_ghash_update(struct crypto_gcm_ghash_ctx *ctx,
+				    const u8 *src, unsigned int srclen)
+{
+	u8 *dst = ctx->buffer;
+
+	if (ctx->bytes) {
+		int n = min(srclen, ctx->bytes);
+		u8 *pos = dst + (16 - ctx->bytes);
+
+		ctx->bytes -= n;
+		srclen -= n;
+
+		while (n--)
+			*pos++ ^= *src++;
+
+		if (!ctx->bytes)
+			gf128mul_4k_lle((be128 *)dst, ctx->gf128);
+	}
+
+	while (srclen >= 16) {
+		crypto_xor(dst, src, 16);
+		gf128mul_4k_lle((be128 *)dst, ctx->gf128);
+		src += 16;
+		srclen -= 16;
+	}
+
+	if (srclen) {
+		ctx->bytes = 16 - srclen;
+		while (srclen--)
+			*dst++ ^= *src++;
+	}
+}
+
+static void crypto_gcm_ghash_update_sg(struct crypto_gcm_ghash_ctx *ctx,
+				       struct scatterlist *sg, int len)
+{
+	struct scatter_walk walk;
+	u8 *src;
+	int n;
+
+	scatterwalk_start(&walk, sg);
+
+	while (len) {
+		n = scatterwalk_clamp(&walk, len);
+
+		if (!n) {
+			scatterwalk_start(&walk, sg_next(walk.sg));
+			n = scatterwalk_clamp(&walk, len);
+		}
+
+		src = scatterwalk_map(&walk, 0);
+
+		crypto_gcm_ghash_update(ctx, src, n);
+		len -= n;
+
+		scatterwalk_unmap(src, 0);
+		scatterwalk_advance(&walk, n);
+		scatterwalk_done(&walk, 0, len);
+		if (len)
+			crypto_yield(ctx->flags);
+	}
+}
+
+static void crypto_gcm_ghash_flush(struct crypto_gcm_ghash_ctx *ctx)
+{
+	u8 *dst = ctx->buffer;
+
+	if (ctx->bytes) {
+		u8 *tmp = dst + (16 - ctx->bytes);
+
+		while (ctx->bytes--)
+			*tmp++ ^= 0;
+
+		gf128mul_4k_lle((be128 *)dst, ctx->gf128);
+	}
+
+	ctx->bytes = 0;
+}
+
+static void crypto_gcm_ghash_final_xor(struct crypto_gcm_ghash_ctx *ctx,
+				       unsigned int authlen,
+				       unsigned int cryptlen, u8 *dst)
+{
+	u8 *buf = ctx->buffer;
+	u128 lengths;
+
+	lengths.a = cpu_to_be64(authlen * 8);
+	lengths.b = cpu_to_be64(cryptlen * 8);
+
+	crypto_gcm_ghash_flush(ctx);
+	crypto_xor(buf, (u8 *)&lengths, 16);
+	gf128mul_4k_lle((be128 *)buf, ctx->gf128);
+	crypto_xor(dst, buf, 16);
+}
+
+static inline void crypto_gcm_set_counter(u8 *counterblock, u32 value)
+{
+	*((u32 *)&counterblock[12]) = cpu_to_be32(value);
+}
+
+static int crypto_gcm_encrypt_counter(struct crypto_aead *aead, u8 *block,
+				       u32 value, const u8 *iv)
+{
+	struct crypto_gcm_ctx *ctx = crypto_aead_ctx(aead);
+	struct crypto_ablkcipher *ctr = ctx->ctr;
+	struct ablkcipher_request req;
+	struct scatterlist sg;
+	u8 counterblock[16];
+
+	if (iv == NULL)
+		memset(counterblock, 0, 12);
+	else
+		memcpy(counterblock, iv, 12);
+
+	crypto_gcm_set_counter(counterblock, value);
+
+	sg_init_one(&sg, block, 16);
+	ablkcipher_request_set_tfm(&req, ctr);
+	ablkcipher_request_set_crypt(&req, &sg, &sg, 16, counterblock);
+	ablkcipher_request_set_callback(&req, 0, NULL, NULL);
+	memset(block, 0, 16);
+	return crypto_ablkcipher_encrypt(&req);
+}
+
+static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key,
+			     unsigned int keylen)
+{
+	struct crypto_gcm_ctx *ctx = crypto_aead_ctx(aead);
+	struct crypto_ablkcipher *ctr = ctx->ctr;
+	int alignmask = crypto_ablkcipher_alignmask(ctr);
+	u8 alignbuf[16+alignmask];
+	u8 *hash = (u8 *)ALIGN((unsigned long)alignbuf, alignmask+1);
+	int err = 0;
+
+	crypto_ablkcipher_clear_flags(ctr, CRYPTO_TFM_REQ_MASK);
+	crypto_ablkcipher_set_flags(ctr, crypto_aead_get_flags(aead) &
+				   CRYPTO_TFM_REQ_MASK);
+
+	err = crypto_ablkcipher_setkey(ctr, key, keylen);
+	if (err)
+		goto out;
+
+	crypto_aead_set_flags(aead, crypto_ablkcipher_get_flags(ctr) &
+				       CRYPTO_TFM_RES_MASK);
+
+	err = crypto_gcm_encrypt_counter(aead, hash, -1, NULL);
+	if (err)
+		goto out;
+
+	if (ctx->gf128 != NULL)
+		gf128mul_free_4k(ctx->gf128);
+
+	ctx->gf128 = gf128mul_init_4k_lle((be128 *)hash);
+
+	if (ctx->gf128 == NULL)
+		err = -ENOMEM;
+
+ out:
+	return err;
+}
+
+static int crypto_gcm_init_crypt(struct ablkcipher_request *ablk_req,
+				  struct aead_request *req,
+				  void (*done)(struct crypto_async_request *,
+					       int))
+{
+	struct crypto_aead *aead = crypto_aead_reqtfm(req);
+	struct crypto_gcm_ctx *ctx = crypto_aead_ctx(aead);
+	struct crypto_gcm_req_priv_ctx *pctx = aead_request_ctx(req);
+	u32 flags = req->base.tfm->crt_flags;
+	u8 *auth_tag = pctx->auth_tag;
+	u8 *counter = pctx->counter;
+	struct crypto_gcm_ghash_ctx *ghash = &pctx->ghash;
+	int err = 0;
+
+	ablkcipher_request_set_tfm(ablk_req, ctx->ctr);
+	ablkcipher_request_set_callback(ablk_req, aead_request_flags(req),
+					done, req);
+	ablkcipher_request_set_crypt(ablk_req, req->src, req->dst,
+				     req->cryptlen, counter);
+
+	err = crypto_gcm_encrypt_counter(aead, auth_tag, 0, req->iv);
+	if (err)
+		goto out;
+
+	memcpy(counter, req->iv, 12);
+	crypto_gcm_set_counter(counter, 1);
+
+	crypto_gcm_ghash_init(ghash, flags, ctx->gf128);
+
+	if (req->assoclen) {
+		crypto_gcm_ghash_update_sg(ghash, req->assoc, req->assoclen);
+		crypto_gcm_ghash_flush(ghash);
+	}
+
+ out:
+	return err;
+}
+
+static void crypto_gcm_encrypt_done(struct crypto_async_request *areq, int err)
+{
+	struct aead_request *req = areq->data;
+	struct crypto_gcm_req_priv_ctx *pctx = aead_request_ctx(req);
+	u8 *auth_tag = pctx->auth_tag;
+	struct crypto_gcm_ghash_ctx *ghash = &pctx->ghash;
+
+	crypto_gcm_ghash_update_sg(ghash, req->dst, req->cryptlen);
+	crypto_gcm_ghash_final_xor(ghash, req->assoclen, req->cryptlen,
+				   auth_tag);
+
+	aead_request_complete(req, err);
+}
+
+static int crypto_gcm_encrypt(struct aead_request *req)
+{
+	struct ablkcipher_request abreq;
+	struct crypto_gcm_req_priv_ctx *pctx = aead_request_ctx(req);
+	u8 *auth_tag = pctx->auth_tag;
+	struct crypto_gcm_ghash_ctx *ghash = &pctx->ghash;
+	int err = 0;
+
+	err = crypto_gcm_init_crypt(&abreq, req, crypto_gcm_encrypt_done);
+	if (err)
+		return err;
+
+	if (req->cryptlen) {
+		err = crypto_ablkcipher_encrypt(&abreq);
+		if (err)
+			return err;
+
+		crypto_gcm_ghash_update_sg(ghash, req->dst, req->cryptlen);
+	}
+
+	crypto_gcm_ghash_final_xor(ghash, req->assoclen, req->cryptlen,
+				   auth_tag);
+
+	return err;
+}
+
+static void crypto_gcm_decrypt_done(struct crypto_async_request *areq, int err)
+{
+	aead_request_complete(areq->data, err);
+}
+
+static int crypto_gcm_decrypt(struct aead_request *req)
+{
+	struct ablkcipher_request abreq;
+	struct crypto_gcm_req_priv_ctx *pctx = aead_request_ctx(req);
+	u8 *auth_tag = pctx->auth_tag;
+	struct crypto_gcm_ghash_ctx *ghash = &pctx->ghash;
+	u8 tag[16];
+	int err;
+
+	if (!req->cryptlen)
+		return -EINVAL;
+
+	memcpy(tag, auth_tag, 16);
+	err = crypto_gcm_init_crypt(&abreq, req, crypto_gcm_decrypt_done);
+	if (err)
+		return err;
+
+	crypto_gcm_ghash_update_sg(ghash, req->src, req->cryptlen);
+	crypto_gcm_ghash_final_xor(ghash, req->assoclen, req->cryptlen,
+				   auth_tag);
+
+	if (memcmp(tag, auth_tag, 16))
+		return -EINVAL;
+
+	return crypto_ablkcipher_decrypt(&abreq);
+}
+
+static int crypto_gcm_init_tfm(struct crypto_tfm *tfm)
+{
+	struct crypto_instance *inst = (void *)tfm->__crt_alg;
+	struct gcm_instance_ctx *ictx = crypto_instance_ctx(inst);
+	struct crypto_gcm_ctx *ctx = crypto_tfm_ctx(tfm);
+	struct crypto_ablkcipher *ctr;
+	unsigned long align;
+	int err;
+
+	ctr = crypto_spawn_ablkcipher(&ictx->ctr);
+	err = PTR_ERR(ctr);
+	if (IS_ERR(ctr))
+		return err;
+
+	ctx->ctr = ctr;
+	ctx->gf128 = NULL;
+
+	align = max_t(unsigned long, crypto_ablkcipher_alignmask(ctr),
+		      __alignof__(u32) - 1);
+	align &= ~(crypto_tfm_ctx_alignment() - 1);
+	tfm->crt_aead.reqsize = align + sizeof(struct crypto_gcm_req_priv_ctx);
+
+	return 0;
+}
+
+static void crypto_gcm_exit_tfm(struct crypto_tfm *tfm)
+{
+	struct crypto_gcm_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	if (ctx->gf128 != NULL)
+		gf128mul_free_4k(ctx->gf128);
+
+	crypto_free_ablkcipher(ctx->ctr);
+}
+
+static struct crypto_instance *crypto_gcm_alloc(struct rtattr **tb)
+{
+	struct crypto_instance *inst;
+	struct crypto_alg *ctr;
+	struct crypto_alg *cipher;
+	struct gcm_instance_ctx *ctx;
+	int err;
+	char ctr_name[CRYPTO_MAX_ALG_NAME];
+
+	err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AEAD);
+	if (err)
+		return ERR_PTR(err);
+
+	cipher = crypto_attr_alg(tb[1], CRYPTO_ALG_TYPE_CIPHER,
+			      CRYPTO_ALG_TYPE_MASK);
+
+	inst = ERR_PTR(PTR_ERR(cipher));
+	if (IS_ERR(cipher))
+		return inst;
+
+	inst = ERR_PTR(ENAMETOOLONG);
+	if (snprintf(
+		    ctr_name, CRYPTO_MAX_ALG_NAME,
+		    "ctr(%s,0,16,4)", cipher->cra_name) >= CRYPTO_MAX_ALG_NAME)
+		return inst;
+
+	ctr = crypto_alg_mod_lookup(ctr_name, CRYPTO_ALG_TYPE_BLKCIPHER,
+				    CRYPTO_ALG_TYPE_MASK);
+
+	if (IS_ERR(ctr))
+		return ERR_PTR(PTR_ERR(ctr));
+
+	if (cipher->cra_blocksize != 16)
+		goto out_put_ctr;
+
+	inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL);
+	err = -ENOMEM;
+	if (!inst)
+		goto out_put_ctr;
+
+	err = -ENAMETOOLONG;
+	if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME,
+		     "gcm(%s)", cipher->cra_name) >= CRYPTO_MAX_ALG_NAME ||
+	    snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME,
+		     "gcm(%s)", cipher->cra_driver_name) >= CRYPTO_MAX_ALG_NAME)
+		goto err_free_inst;
+
+
+	ctx = crypto_instance_ctx(inst);
+	err = crypto_init_spawn(&ctx->ctr, ctr, inst, CRYPTO_ALG_TYPE_MASK);
+	if (err)
+		goto err_free_inst;
+
+	inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC;
+	inst->alg.cra_priority = ctr->cra_priority;
+	inst->alg.cra_blocksize = 16;
+	inst->alg.cra_alignmask = __alignof__(u32) - 1;
+	inst->alg.cra_type = &crypto_aead_type;
+	inst->alg.cra_aead.ivsize = 12;
+	inst->alg.cra_aead.authsize = 16;
+	inst->alg.cra_ctxsize = sizeof(struct crypto_gcm_ctx);
+	inst->alg.cra_init = crypto_gcm_init_tfm;
+	inst->alg.cra_exit = crypto_gcm_exit_tfm;
+	inst->alg.cra_aead.setkey = crypto_gcm_setkey;
+	inst->alg.cra_aead.encrypt = crypto_gcm_encrypt;
+	inst->alg.cra_aead.decrypt = crypto_gcm_decrypt;
+
+out:
+	crypto_mod_put(ctr);
+	return inst;
+err_free_inst:
+	kfree(inst);
+out_put_ctr:
+	inst = ERR_PTR(err);
+	goto out;
+}
+
+static void crypto_gcm_free(struct crypto_instance *inst)
+{
+	struct gcm_instance_ctx *ctx = crypto_instance_ctx(inst);
+
+	crypto_drop_spawn(&ctx->ctr);
+	kfree(inst);
+}
+
+static struct crypto_template crypto_gcm_tmpl = {
+	.name = "gcm",
+	.alloc = crypto_gcm_alloc,
+	.free = crypto_gcm_free,
+	.module = THIS_MODULE,
+};
+
+static int __init crypto_gcm_module_init(void)
+{
+	return crypto_register_template(&crypto_gcm_tmpl);
+}
+
+static void __exit crypto_gcm_module_exit(void)
+{
+	crypto_unregister_template(&crypto_gcm_tmpl);
+}
+
+module_init(crypto_gcm_module_init);
+module_exit(crypto_gcm_module_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Galois/Counter Mode");
+MODULE_AUTHOR("Mikko Herranen <mh1@iki.fi>");
@@ -13,6 +13,7 @@
  * Software Foundation; either version 2 of the License, or (at your option)
  * any later version.
  *
+ * 2007-11-13 Added GCM tests
  * 2007-11-13 Added AEAD support
  * 2007-11-06 Added SHA-224 and SHA-224-HMAC tests
  * 2006-12-07 Added SHA384 HMAC and SHA512 HMAC tests
@@ -1208,6 +1209,10 @@
 			    AES_CTR_ENC_TEST_VECTORS);
 		test_cipher("ctr(aes,4,8,4)", DECRYPT, aes_ctr_dec_tv_template,
 			    AES_CTR_DEC_TEST_VECTORS);
+		test_aead("gcm(aes)", ENCRYPT, aes_gcm_enc_tv_template,
+			  AES_GCM_ENC_TEST_VECTORS);
+		test_aead("gcm(aes)", DECRYPT, aes_gcm_dec_tv_template,
+			  AES_GCM_DEC_TEST_VECTORS);
  
 		//CAST5
 		test_cipher("ecb(cast5)", ENCRYPT, cast5_enc_tv_template,
@@ -13,6 +13,7 @@
  * Software Foundation; either version 2 of the License, or (at your option)
  * any later version.
  *
+ * 2007-11-13 Added GCM tests
  * 2007-11-13 Added AEAD support
  * 2006-12-07 Added SHA384 HMAC and SHA512 HMAC tests
  * 2004-08-09 Cipher speed tests by Reyk Floeter <reyk@vantronix.net>
@@ -2312,6 +2313,8 @@
 #define AES_XTS_DEC_TEST_VECTORS 4
 #define AES_CTR_ENC_TEST_VECTORS 6
 #define AES_CTR_DEC_TEST_VECTORS 6
+#define AES_GCM_ENC_TEST_VECTORS 9
+#define AES_GCM_DEC_TEST_VECTORS 8
  
 static struct cipher_testvec aes_enc_tv_template[] = {
 	{ /* From FIPS-197 */
@@ -3527,6 +3530,371 @@
 			    0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f },
 		.rlen	= 32,
 	},
+};
+
+static struct aead_testvec aes_gcm_enc_tv_template[] = {
+	{ /* From McGrew & Viega - http://citeseer.ist.psu.edu/656989.html */
+		.klen	= 16,
+		.tag	= { 0x58, 0xe2, 0xfc, 0xce, 0xfa, 0x7e, 0x30, 0x61,
+			    0x36, 0x7f, 0x1d, 0x57, 0xa4, 0xe7, 0x45, 0x5a },
+		.tlen	= 16
+	}, {
+		.klen	= 16,
+		.ilen	= 16,
+		.result = { 0x03, 0x88, 0xda, 0xce, 0x60, 0xb6, 0xa3, 0x92,
+			    0xf3, 0x28, 0xc2, 0xb9, 0x71, 0xb2, 0xfe, 0x78 },
+		.rlen	= 16,
+		.tag	= { 0xab, 0x6e, 0x47, 0xd4, 0x2c, 0xec, 0x13, 0xbd,
+			    0xf5, 0x3a, 0x67, 0xb2, 0x12, 0x57, 0xbd, 0xdf },
+		.tlen	= 16
+	}, {
+		.key	= { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },
+		.klen	= 16,
+		.iv	= { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+			    0xde, 0xca, 0xf8, 0x88 },
+		.input	= { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+			    0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+			    0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+			    0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+			    0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+			    0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+			    0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+			    0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55 },
+		.ilen	= 64,
+		.result = { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
+			    0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
+			    0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
+			    0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
+			    0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
+			    0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
+			    0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
+			    0x3d, 0x58, 0xe0, 0x91, 0x47, 0x3f, 0x59, 0x85 },
+		.rlen	= 64,
+		.tag	= { 0x4d, 0x5c, 0x2a, 0xf3, 0x27, 0xcd, 0x64, 0xa6,
+			    0x2c, 0xf3, 0x5a, 0xbd, 0x2b, 0xa6, 0xfa, 0xb4 },
+		.tlen	= 16
+	}, {
+		.key	= { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },
+		.klen	= 16,
+		.iv	= { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+			    0xde, 0xca, 0xf8, 0x88 },
+		.input	= { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+			    0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+			    0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+			    0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+			    0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+			    0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+			    0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+			    0xba, 0x63, 0x7b, 0x39 },
+		.ilen	= 60,
+		.assoc	= { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+			    0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+			    0xab, 0xad, 0xda, 0xd2 },
+		.alen	= 20,
+		.result = { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
+			    0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
+			    0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
+			    0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
+			    0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
+			    0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
+			    0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
+			    0x3d, 0x58, 0xe0, 0x91 },
+		.rlen	= 60,
+		.tag	= { 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
+			    0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47 },
+		.tlen	= 16
+	}, {
+		.klen	= 24,
+		.tag	= { 0xcd, 0x33, 0xb2, 0x8a, 0xc7, 0x73, 0xf7, 0x4b,
+			    0xa0, 0x0e, 0xd1, 0xf3, 0x12, 0x57, 0x24, 0x35 },
+		.tlen	= 16
+	}, {
+		.klen	= 24,
+		.ilen	= 16,
+		.result = { 0x98, 0xe7, 0x24, 0x7c, 0x07, 0xf0, 0xfe, 0x41,
+			    0x1c, 0x26, 0x7e, 0x43, 0x84, 0xb0, 0xf6, 0x00 },
+		.rlen	= 16,
+		.tag	= { 0x2f, 0xf5, 0x8d, 0x80, 0x03, 0x39, 0x27, 0xab,
+			    0x8e, 0xf4, 0xd4, 0x58, 0x75, 0x14, 0xf0, 0xfb },
+		.tlen	= 16
+	}, {
+		.key	= { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
+			    0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c },
+		.klen	= 24,
+		.iv	= { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+			    0xde, 0xca, 0xf8, 0x88 },
+		.input	= { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+			    0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+			    0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+			    0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+			    0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+			    0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+			    0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+			    0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55 },
+		.ilen	= 64,
+		.result = { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
+			    0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
+			    0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
+			    0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
+			    0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
+			    0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
+			    0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
+			    0xcc, 0xda, 0x27, 0x10, 0xac, 0xad, 0xe2, 0x56 },
+		.rlen	= 64,
+		.tag	= { 0x99, 0x24, 0xa7, 0xc8, 0x58, 0x73, 0x36, 0xbf,
+			    0xb1, 0x18, 0x02, 0x4d, 0xb8, 0x67, 0x4a, 0x14 },
+		.tlen	= 16
+	}, {
+		.key	= { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
+			    0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c },
+		.klen	= 24,
+		.iv	= { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+			    0xde, 0xca, 0xf8, 0x88 },
+		.input	= { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+			    0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+			    0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+			    0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+			    0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+			    0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+			    0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+			    0xba, 0x63, 0x7b, 0x39 },
+		.ilen	= 60,
+		.assoc	= { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+			    0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+			    0xab, 0xad, 0xda, 0xd2 },
+		.alen	= 20,
+		.result = { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
+			    0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
+			    0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
+			    0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
+			    0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
+			    0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
+			    0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
+			    0xcc, 0xda, 0x27, 0x10 },
+		.rlen	= 60,
+		.tag	= { 0x25, 0x19, 0x49, 0x8e, 0x80, 0xf1, 0x47, 0x8f,
+			    0x37, 0xba, 0x55, 0xbd, 0x6d, 0x27, 0x61, 0x8c },
+		.tlen	= 16,
+		.np	= 2,
+		.tap	= { 32, 28 },
+		.anp	= 2,
+		.atap	= { 8, 12 }
+	}, {
+		.klen	= 32,
+		.tag	= { 0x53, 0x0f, 0x8a, 0xfb, 0xc7, 0x45, 0x36, 0xb9,
+			    0xa9, 0x63, 0xb4, 0xf1, 0xc4, 0xcb, 0x73, 0x8b },
+		.tlen	= 16
+	}
+};
+
+static struct aead_testvec aes_gcm_dec_tv_template[] = {
+	{ /* From McGrew & Viega - http://citeseer.ist.psu.edu/656989.html */
+		.klen	= 32,
+		.input	= { 0xce, 0xa7, 0x40, 0x3d, 0x4d, 0x60, 0x6b, 0x6e,
+			    0x07, 0x4e, 0xc5, 0xd3, 0xba, 0xf3, 0x9d, 0x18 },
+		.ilen	= 16,
+		.rlen	= 16,
+		.tag	= { 0xd0, 0xd1, 0xc8, 0xa7, 0x99, 0x99, 0x6b, 0xf0,
+			    0x26, 0x5b, 0x98, 0xb5, 0xd4, 0x8a, 0xb9, 0x19 },
+		.tlen	= 16
+	}, {
+		.key	= { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
+			    0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },
+		.klen	= 32,
+		.iv	= { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+			    0xde, 0xca, 0xf8, 0x88 },
+		.input	= { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
+			    0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
+			    0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
+			    0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
+			    0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
+			    0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
+			    0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
+			    0xbc, 0xc9, 0xf6, 0x62, 0x89, 0x80, 0x15, 0xad },
+		.ilen	= 64,
+		.result = { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+			    0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+			    0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+			    0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+			    0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+			    0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+			    0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+			    0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55 },
+		.rlen	= 64,
+		.tag	= { 0xb0, 0x94, 0xda, 0xc5, 0xd9, 0x34, 0x71, 0xbd,
+			    0xec, 0x1a, 0x50, 0x22, 0x70, 0xe3, 0xcc, 0x6c },
+		.tlen	= 16
+	}, {
+		.key	= { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
+			    0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },
+		.klen	= 32,
+		.iv	= { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+			    0xde, 0xca, 0xf8, 0x88 },
+		.input	= { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
+			    0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
+			    0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
+			    0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
+			    0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
+			    0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
+			    0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
+			    0xbc, 0xc9, 0xf6, 0x62 },
+		.ilen	= 60,
+		.assoc	= { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+			    0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+			    0xab, 0xad, 0xda, 0xd2 },
+		.alen	= 20,
+		.result = { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+			    0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+			    0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+			    0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+			    0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+			    0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+			    0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+			    0xba, 0x63, 0x7b, 0x39 },
+		.rlen	= 60,
+		.tag	= { 0x76, 0xfc, 0x6e, 0xce, 0x0f, 0x4e, 0x17, 0x68,
+			    0xcd, 0xdf, 0x88, 0x53, 0xbb, 0x2d, 0x55, 0x1b },
+		.tlen	= 16,
+		.np     = 2,
+		.tap    = { 48, 12 },
+		.anp	= 3,
+		.atap	= { 8, 8, 4 }
+	}, {
+		.key	= { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },
+		.klen	= 16,
+		.iv	= { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+			    0xde, 0xca, 0xf8, 0x88 },
+		.input	= { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
+			    0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
+			    0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
+			    0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
+			    0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
+			    0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
+			    0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
+			    0x3d, 0x58, 0xe0, 0x91, 0x47, 0x3f, 0x59, 0x85 },
+		.ilen	= 64,
+		.result = { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+			    0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+			    0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+			    0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+			    0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+			    0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+			    0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+			    0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55 },
+		.rlen	= 64,
+		.tag	= { 0x4d, 0x5c, 0x2a, 0xf3, 0x27, 0xcd, 0x64, 0xa6,
+			    0x2c, 0xf3, 0x5a, 0xbd, 0x2b, 0xa6, 0xfa, 0xb4 },
+		.tlen	= 16
+	}, {
+		.key	= { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },
+		.klen	= 16,
+		.iv	= { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+			    0xde, 0xca, 0xf8, 0x88 },
+		.input	= { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
+			    0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
+			    0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
+			    0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
+			    0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
+			    0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
+			    0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
+			    0x3d, 0x58, 0xe0, 0x91 },
+		.ilen	= 60,
+		.assoc	= { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+			    0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+			    0xab, 0xad, 0xda, 0xd2 },
+		.alen	= 20,
+		.result = { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+			    0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+			    0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+			    0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+			    0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+			    0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+			    0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+			    0xba, 0x63, 0x7b, 0x39 },
+		.rlen	= 60,
+		.tag	= { 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
+			    0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47 },
+		.tlen	= 16
+	}, {
+		.klen	= 24,
+		.input	= { 0x98, 0xe7, 0x24, 0x7c, 0x07, 0xf0, 0xfe, 0x41,
+			    0x1c, 0x26, 0x7e, 0x43, 0x84, 0xb0, 0xf6, 0x00 },
+		.ilen	= 16,
+		.rlen	= 16,
+		.tag	= { 0x2f, 0xf5, 0x8d, 0x80, 0x03, 0x39, 0x27, 0xab,
+			    0x8e, 0xf4, 0xd4, 0x58, 0x75, 0x14, 0xf0, 0xfb },
+		.tlen	= 16
+	}, {
+		.key	= { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
+			    0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c },
+		.klen	= 24,
+		.iv	= { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+			    0xde, 0xca, 0xf8, 0x88 },
+		.input	= { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
+			    0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
+			    0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
+			    0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
+			    0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
+			    0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
+			    0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
+			    0xcc, 0xda, 0x27, 0x10, 0xac, 0xad, 0xe2, 0x56 },
+		.ilen	= 64,
+		.result = { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+			    0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+			    0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+			    0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+			    0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+			    0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+			    0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+			    0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55 },
+		.rlen	= 64,
+		.tag	= { 0x99, 0x24, 0xa7, 0xc8, 0x58, 0x73, 0x36, 0xbf,
+			    0xb1, 0x18, 0x02, 0x4d, 0xb8, 0x67, 0x4a, 0x14 },
+		.tlen	= 16
+	}, {
+		.key	= { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
+			    0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
+			    0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c },
+		.klen	= 24,
+		.iv	= { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
+			    0xde, 0xca, 0xf8, 0x88 },
+		.input	= { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
+			    0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
+			    0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
+			    0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
+			    0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
+			    0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
+			    0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
+			    0xcc, 0xda, 0x27, 0x10 },
+		.ilen	= 60,
+		.assoc	= { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+			    0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
+			    0xab, 0xad, 0xda, 0xd2 },
+		.alen	= 20,
+		.result = { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
+			    0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
+			    0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
+			    0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
+			    0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
+			    0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
+			    0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
+			    0xba, 0x63, 0x7b, 0x39 },
+		.rlen	= 60,
+		.tag	= { 0x25, 0x19, 0x49, 0x8e, 0x80, 0xf1, 0x47, 0x8f,
+			    0x37, 0xba, 0x55, 0xbd, 0x6d, 0x27, 0x61, 0x8c },
+		.tlen	= 16
+	}
 };
  
 /* Cast5 test vectors from RFC 2144 */
...	...	@@ -206,6 +206,15 @@
206	206	CTR: Counter mode
207	207	This block cipher algorithm is required for IPSec.
208	208
	209	+config CRYPTO_GCM
	210	+ tristate "GCM/GMAC support"
	211	+ select CRYPTO_CTR
	212	+ select CRYPTO_AEAD
	213	+ select CRYPTO_GF128MUL
	214	+ help
	215	+ Support for Galois/Counter Mode (GCM) and Galois Message
	216	+ Authentication Code (GMAC). Required for IPSec.
	217	+
209	218	config CRYPTO_CRYPTD
210	219	tristate "Software async crypto daemon"
211	220	select CRYPTO_ABLKCIPHER
...	...	@@ -33,6 +33,7 @@
33	33	obj-$(CONFIG_CRYPTO_LRW) += lrw.o
34	34	obj-$(CONFIG_CRYPTO_XTS) += xts.o
35	35	obj-$(CONFIG_CRYPTO_CTR) += ctr.o
	36	+obj-$(CONFIG_CRYPTO_GCM) += gcm.o
36	37	obj-$(CONFIG_CRYPTO_CRYPTD) += cryptd.o
37	38	obj-$(CONFIG_CRYPTO_DES) += des_generic.o
38	39	obj-$(CONFIG_CRYPTO_FCRYPT) += fcrypt.o
	1	+/*
	2	+ * GCM: Galois/Counter Mode.
	3	+ *
	4	+ * Copyright (c) 2007 Nokia Siemens Networks - Mikko Herranen <mh1@iki.fi>
	5	+ *
	6	+ * This program is free software; you can redistribute it and/or modify it
	7	+ * under the terms of the GNU General Public License version 2 as published
	8	+ * by the Free Software Foundation.
	9	+ */
	10	+
	11	+#include <crypto/algapi.h>
	12	+#include <crypto/gf128mul.h>
	13	+#include <linux/err.h>
	14	+#include <linux/init.h>
	15	+#include <linux/kernel.h>
	16	+#include <linux/module.h>
	17	+#include <linux/slab.h>
	18	+
	19	+#include "scatterwalk.h"
	20	+
	21	+struct gcm_instance_ctx {
	22	+ struct crypto_spawn ctr;
	23	+};
	24	+
	25	+struct crypto_gcm_ctx {
	26	+ struct crypto_ablkcipher *ctr;
	27	+ struct gf128mul_4k *gf128;
	28	+};
	29	+
	30	+struct crypto_gcm_ghash_ctx {
	31	+ u32 bytes;
	32	+ u32 flags;
	33	+ struct gf128mul_4k *gf128;
	34	+ u8 buffer[16];
	35	+};
	36	+
	37	+struct crypto_gcm_req_priv_ctx {
	38	+ u8 auth_tag[16];
	39	+ u8 counter[16];
	40	+ struct crypto_gcm_ghash_ctx ghash;
	41	+};
	42	+
	43	+static void crypto_gcm_ghash_init(struct crypto_gcm_ghash_ctx *ctx, u32 flags,
	44	+ struct gf128mul_4k *gf128)
	45	+{
	46	+ ctx->bytes = 0;
	47	+ ctx->flags = flags;
	48	+ ctx->gf128 = gf128;
	49	+ memset(ctx->buffer, 0, 16);
	50	+}
	51	+
	52	+static void crypto_gcm_ghash_update(struct crypto_gcm_ghash_ctx *ctx,
	53	+ const u8 *src, unsigned int srclen)
	54	+{
	55	+ u8 *dst = ctx->buffer;
	56	+
	57	+ if (ctx->bytes) {
	58	+ int n = min(srclen, ctx->bytes);
	59	+ u8 *pos = dst + (16 - ctx->bytes);
	60	+
	61	+ ctx->bytes -= n;
	62	+ srclen -= n;
	63	+
	64	+ while (n--)
	65	+ pos++ ^= src++;
	66	+
	67	+ if (!ctx->bytes)
	68	+ gf128mul_4k_lle((be128 *)dst, ctx->gf128);
	69	+ }
	70	+
	71	+ while (srclen >= 16) {
	72	+ crypto_xor(dst, src, 16);
	73	+ gf128mul_4k_lle((be128 *)dst, ctx->gf128);
	74	+ src += 16;
	75	+ srclen -= 16;
	76	+ }
	77	+
	78	+ if (srclen) {
	79	+ ctx->bytes = 16 - srclen;
	80	+ while (srclen--)
	81	+ dst++ ^= src++;
	82	+ }
	83	+}
	84	+
	85	+static void crypto_gcm_ghash_update_sg(struct crypto_gcm_ghash_ctx *ctx,
	86	+ struct scatterlist *sg, int len)
	87	+{
	88	+ struct scatter_walk walk;
	89	+ u8 *src;
	90	+ int n;
	91	+
	92	+ scatterwalk_start(&walk, sg);
	93	+
	94	+ while (len) {
	95	+ n = scatterwalk_clamp(&walk, len);
	96	+
	97	+ if (!n) {
	98	+ scatterwalk_start(&walk, sg_next(walk.sg));
	99	+ n = scatterwalk_clamp(&walk, len);
	100	+ }
	101	+
	102	+ src = scatterwalk_map(&walk, 0);
	103	+
	104	+ crypto_gcm_ghash_update(ctx, src, n);
	105	+ len -= n;
	106	+
	107	+ scatterwalk_unmap(src, 0);
	108	+ scatterwalk_advance(&walk, n);
	109	+ scatterwalk_done(&walk, 0, len);
	110	+ if (len)
	111	+ crypto_yield(ctx->flags);
	112	+ }
	113	+}
	114	+
	115	+static void crypto_gcm_ghash_flush(struct crypto_gcm_ghash_ctx *ctx)
	116	+{
	117	+ u8 *dst = ctx->buffer;
	118	+
	119	+ if (ctx->bytes) {
	120	+ u8 *tmp = dst + (16 - ctx->bytes);
	121	+
	122	+ while (ctx->bytes--)
	123	+ *tmp++ ^= 0;
	124	+
	125	+ gf128mul_4k_lle((be128 *)dst, ctx->gf128);
	126	+ }
	127	+
	128	+ ctx->bytes = 0;
	129	+}
	130	+
	131	+static void crypto_gcm_ghash_final_xor(struct crypto_gcm_ghash_ctx *ctx,
	132	+ unsigned int authlen,
	133	+ unsigned int cryptlen, u8 *dst)
	134	+{
	135	+ u8 *buf = ctx->buffer;
	136	+ u128 lengths;
	137	+
	138	+ lengths.a = cpu_to_be64(authlen * 8);
	139	+ lengths.b = cpu_to_be64(cryptlen * 8);
	140	+
	141	+ crypto_gcm_ghash_flush(ctx);
	142	+ crypto_xor(buf, (u8 *)&lengths, 16);
	143	+ gf128mul_4k_lle((be128 *)buf, ctx->gf128);
	144	+ crypto_xor(dst, buf, 16);
	145	+}
	146	+
	147	+static inline void crypto_gcm_set_counter(u8 *counterblock, u32 value)
	148	+{
	149	+ ((u32 )&counterblock[12]) = cpu_to_be32(value);
	150	+}
	151	+
	152	+static int crypto_gcm_encrypt_counter(struct crypto_aead aead, u8 block,
	153	+ u32 value, const u8 *iv)
	154	+{
	155	+ struct crypto_gcm_ctx *ctx = crypto_aead_ctx(aead);
	156	+ struct crypto_ablkcipher *ctr = ctx->ctr;
	157	+ struct ablkcipher_request req;
	158	+ struct scatterlist sg;
	159	+ u8 counterblock[16];
	160	+
	161	+ if (iv == NULL)
	162	+ memset(counterblock, 0, 12);
	163	+ else
	164	+ memcpy(counterblock, iv, 12);
	165	+
	166	+ crypto_gcm_set_counter(counterblock, value);
	167	+
	168	+ sg_init_one(&sg, block, 16);
	169	+ ablkcipher_request_set_tfm(&req, ctr);
	170	+ ablkcipher_request_set_crypt(&req, &sg, &sg, 16, counterblock);
	171	+ ablkcipher_request_set_callback(&req, 0, NULL, NULL);
	172	+ memset(block, 0, 16);
	173	+ return crypto_ablkcipher_encrypt(&req);
	174	+}
	175	+
	176	+static int crypto_gcm_setkey(struct crypto_aead aead, const u8 key,
	177	+ unsigned int keylen)
	178	+{
	179	+ struct crypto_gcm_ctx *ctx = crypto_aead_ctx(aead);
	180	+ struct crypto_ablkcipher *ctr = ctx->ctr;
	181	+ int alignmask = crypto_ablkcipher_alignmask(ctr);
	182	+ u8 alignbuf[16+alignmask];
	183	+ u8 hash = (u8 )ALIGN((unsigned long)alignbuf, alignmask+1);
	184	+ int err = 0;
	185	+
	186	+ crypto_ablkcipher_clear_flags(ctr, CRYPTO_TFM_REQ_MASK);
	187	+ crypto_ablkcipher_set_flags(ctr, crypto_aead_get_flags(aead) &
	188	+ CRYPTO_TFM_REQ_MASK);
	189	+
	190	+ err = crypto_ablkcipher_setkey(ctr, key, keylen);
	191	+ if (err)
	192	+ goto out;
	193	+
	194	+ crypto_aead_set_flags(aead, crypto_ablkcipher_get_flags(ctr) &
	195	+ CRYPTO_TFM_RES_MASK);
	196	+
	197	+ err = crypto_gcm_encrypt_counter(aead, hash, -1, NULL);
	198	+ if (err)
	199	+ goto out;
	200	+
	201	+ if (ctx->gf128 != NULL)
	202	+ gf128mul_free_4k(ctx->gf128);
	203	+
	204	+ ctx->gf128 = gf128mul_init_4k_lle((be128 *)hash);
	205	+
	206	+ if (ctx->gf128 == NULL)
	207	+ err = -ENOMEM;
	208	+
	209	+ out:
	210	+ return err;
	211	+}
	212	+
	213	+static int crypto_gcm_init_crypt(struct ablkcipher_request *ablk_req,
	214	+ struct aead_request *req,
	215	+ void (done)(struct crypto_async_request ,
	216	+ int))
	217	+{
	218	+ struct crypto_aead *aead = crypto_aead_reqtfm(req);
	219	+ struct crypto_gcm_ctx *ctx = crypto_aead_ctx(aead);
	220	+ struct crypto_gcm_req_priv_ctx *pctx = aead_request_ctx(req);
	221	+ u32 flags = req->base.tfm->crt_flags;
	222	+ u8 *auth_tag = pctx->auth_tag;
	223	+ u8 *counter = pctx->counter;
	224	+ struct crypto_gcm_ghash_ctx *ghash = &pctx->ghash;
	225	+ int err = 0;
	226	+
	227	+ ablkcipher_request_set_tfm(ablk_req, ctx->ctr);
	228	+ ablkcipher_request_set_callback(ablk_req, aead_request_flags(req),
	229	+ done, req);
	230	+ ablkcipher_request_set_crypt(ablk_req, req->src, req->dst,
	231	+ req->cryptlen, counter);
	232	+
	233	+ err = crypto_gcm_encrypt_counter(aead, auth_tag, 0, req->iv);
	234	+ if (err)
	235	+ goto out;
	236	+
	237	+ memcpy(counter, req->iv, 12);
	238	+ crypto_gcm_set_counter(counter, 1);
	239	+
	240	+ crypto_gcm_ghash_init(ghash, flags, ctx->gf128);
	241	+
	242	+ if (req->assoclen) {
	243	+ crypto_gcm_ghash_update_sg(ghash, req->assoc, req->assoclen);
	244	+ crypto_gcm_ghash_flush(ghash);
	245	+ }
	246	+
	247	+ out:
	248	+ return err;
	249	+}
	250	+
	251	+static void crypto_gcm_encrypt_done(struct crypto_async_request *areq, int err)
	252	+{
	253	+ struct aead_request *req = areq->data;
	254	+ struct crypto_gcm_req_priv_ctx *pctx = aead_request_ctx(req);
	255	+ u8 *auth_tag = pctx->auth_tag;
	256	+ struct crypto_gcm_ghash_ctx *ghash = &pctx->ghash;
	257	+
	258	+ crypto_gcm_ghash_update_sg(ghash, req->dst, req->cryptlen);
	259	+ crypto_gcm_ghash_final_xor(ghash, req->assoclen, req->cryptlen,
	260	+ auth_tag);
	261	+
	262	+ aead_request_complete(req, err);
	263	+}
	264	+
	265	+static int crypto_gcm_encrypt(struct aead_request *req)
	266	+{
	267	+ struct ablkcipher_request abreq;
	268	+ struct crypto_gcm_req_priv_ctx *pctx = aead_request_ctx(req);
	269	+ u8 *auth_tag = pctx->auth_tag;
	270	+ struct crypto_gcm_ghash_ctx *ghash = &pctx->ghash;
	271	+ int err = 0;
	272	+
	273	+ err = crypto_gcm_init_crypt(&abreq, req, crypto_gcm_encrypt_done);
	274	+ if (err)
	275	+ return err;
	276	+
	277	+ if (req->cryptlen) {
	278	+ err = crypto_ablkcipher_encrypt(&abreq);
	279	+ if (err)
	280	+ return err;
	281	+
	282	+ crypto_gcm_ghash_update_sg(ghash, req->dst, req->cryptlen);
	283	+ }
	284	+
	285	+ crypto_gcm_ghash_final_xor(ghash, req->assoclen, req->cryptlen,
	286	+ auth_tag);
	287	+
	288	+ return err;
	289	+}
	290	+
	291	+static void crypto_gcm_decrypt_done(struct crypto_async_request *areq, int err)
	292	+{
	293	+ aead_request_complete(areq->data, err);
	294	+}
	295	+
	296	+static int crypto_gcm_decrypt(struct aead_request *req)
	297	+{
	298	+ struct ablkcipher_request abreq;
	299	+ struct crypto_gcm_req_priv_ctx *pctx = aead_request_ctx(req);
	300	+ u8 *auth_tag = pctx->auth_tag;
	301	+ struct crypto_gcm_ghash_ctx *ghash = &pctx->ghash;
	302	+ u8 tag[16];
	303	+ int err;
	304	+
	305	+ if (!req->cryptlen)
	306	+ return -EINVAL;
	307	+
	308	+ memcpy(tag, auth_tag, 16);
	309	+ err = crypto_gcm_init_crypt(&abreq, req, crypto_gcm_decrypt_done);
	310	+ if (err)
	311	+ return err;
	312	+
	313	+ crypto_gcm_ghash_update_sg(ghash, req->src, req->cryptlen);
	314	+ crypto_gcm_ghash_final_xor(ghash, req->assoclen, req->cryptlen,
	315	+ auth_tag);
	316	+
	317	+ if (memcmp(tag, auth_tag, 16))
	318	+ return -EINVAL;
	319	+
	320	+ return crypto_ablkcipher_decrypt(&abreq);
	321	+}
	322	+
	323	+static int crypto_gcm_init_tfm(struct crypto_tfm *tfm)
	324	+{
	325	+ struct crypto_instance inst = (void )tfm->__crt_alg;
	326	+ struct gcm_instance_ctx *ictx = crypto_instance_ctx(inst);
	327	+ struct crypto_gcm_ctx *ctx = crypto_tfm_ctx(tfm);
	328	+ struct crypto_ablkcipher *ctr;
	329	+ unsigned long align;
	330	+ int err;
	331	+
	332	+ ctr = crypto_spawn_ablkcipher(&ictx->ctr);
	333	+ err = PTR_ERR(ctr);
	334	+ if (IS_ERR(ctr))
	335	+ return err;
	336	+
	337	+ ctx->ctr = ctr;
	338	+ ctx->gf128 = NULL;
	339	+
	340	+ align = max_t(unsigned long, crypto_ablkcipher_alignmask(ctr),
	341	+ __alignof__(u32) - 1);
	342	+ align &= ~(crypto_tfm_ctx_alignment() - 1);
	343	+ tfm->crt_aead.reqsize = align + sizeof(struct crypto_gcm_req_priv_ctx);
	344	+
	345	+ return 0;
	346	+}
	347	+
	348	+static void crypto_gcm_exit_tfm(struct crypto_tfm *tfm)
	349	+{
	350	+ struct crypto_gcm_ctx *ctx = crypto_tfm_ctx(tfm);
	351	+
	352	+ if (ctx->gf128 != NULL)
	353	+ gf128mul_free_4k(ctx->gf128);
	354	+
	355	+ crypto_free_ablkcipher(ctx->ctr);
	356	+}
	357	+
	358	+static struct crypto_instance crypto_gcm_alloc(struct rtattr *tb)
	359	+{
	360	+ struct crypto_instance *inst;
	361	+ struct crypto_alg *ctr;
	362	+ struct crypto_alg *cipher;
	363	+ struct gcm_instance_ctx *ctx;
	364	+ int err;
	365	+ char ctr_name[CRYPTO_MAX_ALG_NAME];
	366	+
	367	+ err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AEAD);
	368	+ if (err)
	369	+ return ERR_PTR(err);
	370	+
	371	+ cipher = crypto_attr_alg(tb[1], CRYPTO_ALG_TYPE_CIPHER,
	372	+ CRYPTO_ALG_TYPE_MASK);
	373	+
	374	+ inst = ERR_PTR(PTR_ERR(cipher));
	375	+ if (IS_ERR(cipher))
	376	+ return inst;
	377	+
	378	+ inst = ERR_PTR(ENAMETOOLONG);
	379	+ if (snprintf(
	380	+ ctr_name, CRYPTO_MAX_ALG_NAME,
	381	+ "ctr(%s,0,16,4)", cipher->cra_name) >= CRYPTO_MAX_ALG_NAME)
	382	+ return inst;
	383	+
	384	+ ctr = crypto_alg_mod_lookup(ctr_name, CRYPTO_ALG_TYPE_BLKCIPHER,
	385	+ CRYPTO_ALG_TYPE_MASK);
	386	+
	387	+ if (IS_ERR(ctr))
	388	+ return ERR_PTR(PTR_ERR(ctr));
	389	+
	390	+ if (cipher->cra_blocksize != 16)
	391	+ goto out_put_ctr;
	392	+
	393	+ inst = kzalloc(sizeof(inst) + sizeof(ctx), GFP_KERNEL);
	394	+ err = -ENOMEM;
	395	+ if (!inst)
	396	+ goto out_put_ctr;
	397	+
	398	+ err = -ENAMETOOLONG;
	399	+ if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME,
	400	+ "gcm(%s)", cipher->cra_name) >= CRYPTO_MAX_ALG_NAME \|\|
	401	+ snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME,
	402	+ "gcm(%s)", cipher->cra_driver_name) >= CRYPTO_MAX_ALG_NAME)
	403	+ goto err_free_inst;
	404	+
	405	+
	406	+ ctx = crypto_instance_ctx(inst);
	407	+ err = crypto_init_spawn(&ctx->ctr, ctr, inst, CRYPTO_ALG_TYPE_MASK);
	408	+ if (err)
	409	+ goto err_free_inst;
	410	+
	411	+ inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD \| CRYPTO_ALG_ASYNC;
	412	+ inst->alg.cra_priority = ctr->cra_priority;
	413	+ inst->alg.cra_blocksize = 16;
	414	+ inst->alg.cra_alignmask = __alignof__(u32) - 1;
	415	+ inst->alg.cra_type = &crypto_aead_type;
	416	+ inst->alg.cra_aead.ivsize = 12;
	417	+ inst->alg.cra_aead.authsize = 16;
	418	+ inst->alg.cra_ctxsize = sizeof(struct crypto_gcm_ctx);
	419	+ inst->alg.cra_init = crypto_gcm_init_tfm;
	420	+ inst->alg.cra_exit = crypto_gcm_exit_tfm;
	421	+ inst->alg.cra_aead.setkey = crypto_gcm_setkey;
	422	+ inst->alg.cra_aead.encrypt = crypto_gcm_encrypt;
	423	+ inst->alg.cra_aead.decrypt = crypto_gcm_decrypt;
	424	+
	425	+out:
	426	+ crypto_mod_put(ctr);
	427	+ return inst;
	428	+err_free_inst:
	429	+ kfree(inst);
	430	+out_put_ctr:
	431	+ inst = ERR_PTR(err);
	432	+ goto out;
	433	+}
	434	+
	435	+static void crypto_gcm_free(struct crypto_instance *inst)
	436	+{
	437	+ struct gcm_instance_ctx *ctx = crypto_instance_ctx(inst);
	438	+
	439	+ crypto_drop_spawn(&ctx->ctr);
	440	+ kfree(inst);
	441	+}
	442	+
	443	+static struct crypto_template crypto_gcm_tmpl = {
	444	+ .name = "gcm",
	445	+ .alloc = crypto_gcm_alloc,
	446	+ .free = crypto_gcm_free,
	447	+ .module = THIS_MODULE,
	448	+};
	449	+
	450	+static int __init crypto_gcm_module_init(void)
	451	+{
	452	+ return crypto_register_template(&crypto_gcm_tmpl);
	453	+}
	454	+
	455	+static void __exit crypto_gcm_module_exit(void)
	456	+{
	457	+ crypto_unregister_template(&crypto_gcm_tmpl);
	458	+}
	459	+
	460	+module_init(crypto_gcm_module_init);
	461	+module_exit(crypto_gcm_module_exit);
	462	+
	463	+MODULE_LICENSE("GPL");
	464	+MODULE_DESCRIPTION("Galois/Counter Mode");
	465	+MODULE_AUTHOR("Mikko Herranen <mh1@iki.fi>");
...	...	@@ -13,6 +13,7 @@
13	13	* Software Foundation; either version 2 of the License, or (at your option)
14	14	* any later version.
15	15	*
	16	+ * 2007-11-13 Added GCM tests
16	17	* 2007-11-13 Added AEAD support
17	18	* 2007-11-06 Added SHA-224 and SHA-224-HMAC tests
18	19	* 2006-12-07 Added SHA384 HMAC and SHA512 HMAC tests
...	...	@@ -1208,6 +1209,10 @@
1208	1209	AES_CTR_ENC_TEST_VECTORS);
1209	1210	test_cipher("ctr(aes,4,8,4)", DECRYPT, aes_ctr_dec_tv_template,
1210	1211	AES_CTR_DEC_TEST_VECTORS);
	1212	+ test_aead("gcm(aes)", ENCRYPT, aes_gcm_enc_tv_template,
	1213	+ AES_GCM_ENC_TEST_VECTORS);
	1214	+ test_aead("gcm(aes)", DECRYPT, aes_gcm_dec_tv_template,
	1215	+ AES_GCM_DEC_TEST_VECTORS);
1211	1216
1212	1217	//CAST5
1213	1218	test_cipher("ecb(cast5)", ENCRYPT, cast5_enc_tv_template,