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| author | Egor Tensin <Egor.Tensin@gmail.com> | 2015-06-19 01:39:02 +0300 |
|---|---|---|
| committer | Egor Tensin <Egor.Tensin@gmail.com> | 2015-06-19 01:39:02 +0300 |
| commit | 242d678aeed0b806a30553be0fa87189b7478450 (patch) | |
| tree | cf0c88992dd3b94eef6a8d0d24a18e34719ad685 /include/aesni | |
| parent | add CTR mode to "boxes" (diff) | |
| download | aes-tools-242d678aeed0b806a30553be0fa87189b7478450.tar.gz aes-tools-242d678aeed0b806a30553be0fa87189b7478450.zip | |
OFB/CTR decryption is the same as encryption
Diffstat (limited to '')
| -rw-r--r-- | include/aesni/aes.h | 42 |
1 files changed, 6 insertions, 36 deletions
diff --git a/include/aesni/aes.h b/include/aesni/aes.h index b7a2854..bad5463 100644 --- a/include/aesni/aes.h +++ b/include/aesni/aes.h @@ -410,12 +410,7 @@ static __inline AesNI_Aes_Block __fastcall aesni_aes128_decrypt_block_ofb( AesNI_Aes_Block init_vector, AesNI_Aes_Block* next_init_vector) { - assert(encryption_keys); - assert(next_init_vector); - - AesNI_Aes_Block tmp = aesni_aes128_encrypt_block_(init_vector, encryption_keys); - *next_init_vector = tmp; - return aesni_xor_block128(tmp, ciphertext); + return aesni_aes128_encrypt_block_ofb(ciphertext, encryption_keys, init_vector, next_init_vector); } /** @@ -458,12 +453,7 @@ static __inline AesNI_Aes_Block __fastcall aesni_aes128_decrypt_block_ctr( AesNI_Aes_Block init_vector, AesNI_Aes_Block* next_init_vector) { - assert(encryption_keys); - assert(next_init_vector); - - AesNI_Aes_Block plaintext = aesni_xor_block128(ciphertext, aesni_aes128_encrypt_block_(init_vector, encryption_keys)); - *next_init_vector = aesni_aes_inc_counter(init_vector); - return plaintext; + return aesni_aes128_encrypt_block_ctr(ciphertext, encryption_keys, init_vector, next_init_vector); } /** @@ -668,12 +658,7 @@ static __inline AesNI_Aes_Block __fastcall aesni_aes192_decrypt_block_ofb( AesNI_Aes_Block init_vector, AesNI_Aes_Block* next_init_vector) { - assert(encryption_keys); - assert(next_init_vector); - - AesNI_Aes_Block tmp = aesni_aes192_encrypt_block_(init_vector, encryption_keys); - *next_init_vector = tmp; - return aesni_xor_block128(tmp, ciphertext); + return aesni_aes192_encrypt_block_ofb(ciphertext, encryption_keys, init_vector, next_init_vector); } /** @@ -716,12 +701,7 @@ static __inline AesNI_Aes_Block __fastcall aesni_aes192_decrypt_block_ctr( AesNI_Aes_Block init_vector, AesNI_Aes_Block* next_init_vector) { - assert(encryption_keys); - assert(next_init_vector); - - AesNI_Aes_Block plaintext = aesni_xor_block128(ciphertext, aesni_aes192_encrypt_block_(init_vector, encryption_keys)); - *next_init_vector = aesni_aes_inc_counter(init_vector); - return plaintext; + return aesni_aes192_encrypt_block_ctr(ciphertext, encryption_keys, init_vector, next_init_vector); } /** @@ -926,12 +906,7 @@ static __inline AesNI_Aes_Block __fastcall aesni_aes256_decrypt_block_ofb( AesNI_Aes_Block init_vector, AesNI_Aes_Block* next_init_vector) { - assert(encryption_keys); - assert(next_init_vector); - - AesNI_Aes_Block tmp = aesni_aes256_encrypt_block_(init_vector, encryption_keys); - *next_init_vector = tmp; - return aesni_xor_block128(tmp, ciphertext); + return aesni_aes256_encrypt_block_ofb(ciphertext, encryption_keys, init_vector, next_init_vector); } /** @@ -974,12 +949,7 @@ static __inline AesNI_Aes_Block __fastcall aesni_aes256_decrypt_block_ctr( AesNI_Aes_Block init_vector, AesNI_Aes_Block* next_init_vector) { - assert(encryption_keys); - assert(next_init_vector); - - AesNI_Aes_Block plaintext = aesni_xor_block128(ciphertext, aesni_aes256_encrypt_block_(init_vector, encryption_keys)); - *next_init_vector = aesni_aes_inc_counter(init_vector); - return plaintext; + return aesni_aes256_encrypt_block_ctr(ciphertext, encryption_keys, init_vector, next_init_vector); } #ifdef __cplusplus |