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AESCE: add macro guard of CIPHER_ENCRYPT_ONLY

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Signed-off-by: Yanray Wang <yanray.wang@arm.com>
This commit is contained in:
Yanray Wang 2023-08-28 15:40:23 +08:00
parent 78ee0c9e4f
commit 590c9b7abe
2 changed files with 11 additions and 0 deletions
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9
library/aesce.c
View File

@ -199,6 +199,7 @@ rounds_10:
/* Two rounds of AESCE decryption */
#define AESCE_DECRYPT_ROUND_X2 AESCE_DECRYPT_ROUND; AESCE_DECRYPT_ROUND
#if !defined(MBEDTLS_CIPHER_ENCRYPT_ONLY)
static uint8x16_t aesce_decrypt_block(uint8x16_t block,
unsigned char *keys,
int rounds)
@ -230,6 +231,7 @@ rounds_10:
return block;
}
#endif
/*
* AES-ECB block en(de)cryption
@ -242,11 +244,16 @@ int mbedtls_aesce_crypt_ecb(mbedtls_aes_context *ctx,
uint8x16_t block = vld1q_u8(&input[0]);
unsigned char *keys = (unsigned char *) (ctx->buf + ctx->rk_offset);
#if !defined(MBEDTLS_CIPHER_ENCRYPT_ONLY)
if (mode == MBEDTLS_AES_ENCRYPT) {
block = aesce_encrypt_block(block, keys, ctx->nr);
} else {
block = aesce_decrypt_block(block, keys, ctx->nr);
}
#else
(void) mode;
block = aesce_encrypt_block(block, keys, ctx->nr);
#endif /* !MBEDTLS_CIPHER_ENCRYPT_ONLY */
vst1q_u8(&output[0], block);
return 0;
@ -255,6 +262,7 @@ int mbedtls_aesce_crypt_ecb(mbedtls_aes_context *ctx,
/*
* Compute decryption round keys from encryption round keys
*/
#if !defined(MBEDTLS_CIPHER_ENCRYPT_ONLY)
void mbedtls_aesce_inverse_key(unsigned char *invkey,
const unsigned char *fwdkey,
int nr)
@ -269,6 +277,7 @@ void mbedtls_aesce_inverse_key(unsigned char *invkey,
vst1q_u8(invkey + i * 16, vld1q_u8(fwdkey + j * 16));
}
#endif
static inline uint32_t aes_rot_word(uint32_t word)
{

2
library/aesce.h
View File

@ -102,6 +102,7 @@ void mbedtls_aesce_gcm_mult(unsigned char c[16],
const unsigned char b[16]);
#if !defined(MBEDTLS_CIPHER_ENCRYPT_ONLY)
/**
* \brief Internal round key inversion. This function computes
* decryption round keys from the encryption round keys.
@ -113,6 +114,7 @@ void mbedtls_aesce_gcm_mult(unsigned char c[16],
void mbedtls_aesce_inverse_key(unsigned char *invkey,
const unsigned char *fwdkey,
int nr);
#endif /* !MBEDTLS_CIPHER_ENCRYPT_ONLY */
/**
* \brief Internal key expansion for encryption