Eric Lee / smarc-fsl-linux-kernel

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include/crypto/gcm.h 867 Bytes
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ef7803245   Corentin LABBE   crypto: gcm - add... 
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  #ifndef _CRYPTO_GCM_H
  #define _CRYPTO_GCM_H
65526f638   Iuliana Prodan   crypto: gcm - hel... 
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  #include <linux/errno.h>
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  #define GCM_AES_IV_SIZE 12
  #define GCM_RFC4106_IV_SIZE 8
  #define GCM_RFC4543_IV_SIZE 8
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  /*
   * validate authentication tag for GCM
   */
  static inline int crypto_gcm_check_authsize(unsigned int authsize)
  {
  	switch (authsize) {
  	case 4:
  	case 8:
  	case 12:
  	case 13:
  	case 14:
  	case 15:
  	case 16:
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	return 0;
  }
  
  /*
   * validate authentication tag for RFC4106
   */
  static inline int crypto_rfc4106_check_authsize(unsigned int authsize)
  {
  	switch (authsize) {
  	case 8:
  	case 12:
  	case 16:
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	return 0;
  }
  
  /*
   * validate assoclen for RFC4106/RFC4543
   */
  static inline int crypto_ipsec_check_assoclen(unsigned int assoclen)
  {
  	switch (assoclen) {
  	case 16:
  	case 20:
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	return 0;
  }
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  #endif