diff options
Diffstat (limited to 'demos/evp/aesccm.c')
-rw-r--r-- | demos/evp/aesccm.c | 167 |
1 files changed, 83 insertions, 84 deletions
diff --git a/demos/evp/aesccm.c b/demos/evp/aesccm.c index e8897fbbc1..1810a51fc8 100644 --- a/demos/evp/aesccm.c +++ b/demos/evp/aesccm.c @@ -1,4 +1,5 @@ -/* Simple AES CCM test program, uses the same NIST data used for the FIPS +/* + * Simple AES CCM test program, uses the same NIST data used for the FIPS * self test but uses the application level EVP APIs. */ #include <stdio.h> @@ -8,108 +9,106 @@ /* AES-CCM test data from NIST public test vectors */ static const unsigned char ccm_key[] = { - 0xce,0xb0,0x09,0xae,0xa4,0x45,0x44,0x51,0xfe,0xad,0xf0,0xe6, - 0xb3,0x6f,0x45,0x55,0x5d,0xd0,0x47,0x23,0xba,0xa4,0x48,0xe8 + 0xce, 0xb0, 0x09, 0xae, 0xa4, 0x45, 0x44, 0x51, 0xfe, 0xad, 0xf0, 0xe6, + 0xb3, 0x6f, 0x45, 0x55, 0x5d, 0xd0, 0x47, 0x23, 0xba, 0xa4, 0x48, 0xe8 }; static const unsigned char ccm_nonce[] = { - 0x76,0x40,0x43,0xc4,0x94,0x60,0xb7 + 0x76, 0x40, 0x43, 0xc4, 0x94, 0x60, 0xb7 }; static const unsigned char ccm_adata[] = { - 0x6e,0x80,0xdd,0x7f,0x1b,0xad,0xf3,0xa1,0xc9,0xab,0x25,0xc7, - 0x5f,0x10,0xbd,0xe7,0x8c,0x23,0xfa,0x0e,0xb8,0xf9,0xaa,0xa5, - 0x3a,0xde,0xfb,0xf4,0xcb,0xf7,0x8f,0xe4 + 0x6e, 0x80, 0xdd, 0x7f, 0x1b, 0xad, 0xf3, 0xa1, 0xc9, 0xab, 0x25, 0xc7, + 0x5f, 0x10, 0xbd, 0xe7, 0x8c, 0x23, 0xfa, 0x0e, 0xb8, 0xf9, 0xaa, 0xa5, + 0x3a, 0xde, 0xfb, 0xf4, 0xcb, 0xf7, 0x8f, 0xe4 }; static const unsigned char ccm_pt[] = { - 0xc8,0xd2,0x75,0xf9,0x19,0xe1,0x7d,0x7f,0xe6,0x9c,0x2a,0x1f, - 0x58,0x93,0x9d,0xfe,0x4d,0x40,0x37,0x91,0xb5,0xdf,0x13,0x10 + 0xc8, 0xd2, 0x75, 0xf9, 0x19, 0xe1, 0x7d, 0x7f, 0xe6, 0x9c, 0x2a, 0x1f, + 0x58, 0x93, 0x9d, 0xfe, 0x4d, 0x40, 0x37, 0x91, 0xb5, 0xdf, 0x13, 0x10 }; static const unsigned char ccm_ct[] = { - 0x8a,0x0f,0x3d,0x82,0x29,0xe4,0x8e,0x74,0x87,0xfd,0x95,0xa2, - 0x8a,0xd3,0x92,0xc8,0x0b,0x36,0x81,0xd4,0xfb,0xc7,0xbb,0xfd + 0x8a, 0x0f, 0x3d, 0x82, 0x29, 0xe4, 0x8e, 0x74, 0x87, 0xfd, 0x95, 0xa2, + 0x8a, 0xd3, 0x92, 0xc8, 0x0b, 0x36, 0x81, 0xd4, 0xfb, 0xc7, 0xbb, 0xfd }; static const unsigned char ccm_tag[] = { - 0x2d,0xd6,0xef,0x1c,0x45,0xd4,0xcc,0xb7,0x23,0xdc,0x07,0x44, - 0x14,0xdb,0x50,0x6d + 0x2d, 0xd6, 0xef, 0x1c, 0x45, 0xd4, 0xcc, 0xb7, 0x23, 0xdc, 0x07, 0x44, + 0x14, 0xdb, 0x50, 0x6d }; void aes_ccm_encrypt(void) - { - EVP_CIPHER_CTX *ctx; - int outlen, tmplen; - unsigned char outbuf[1024]; - printf("AES CCM Encrypt:\n"); - printf("Plaintext:\n"); - BIO_dump_fp(stdout, ccm_pt, sizeof(ccm_pt)); - ctx = EVP_CIPHER_CTX_new(); - /* Set cipher type and mode */ - EVP_EncryptInit_ex(ctx, EVP_aes_192_ccm(), NULL, NULL, NULL); - /* Set nonce length if default 96 bits is not appropriate */ - EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_IVLEN, sizeof(ccm_nonce), NULL); - /* Set tag length */ - EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, sizeof(ccm_tag), NULL); - /* Initialise key and IV */ - EVP_EncryptInit_ex(ctx, NULL, NULL, ccm_key, ccm_nonce); - /* Set plaintext length: only needed if AAD is used */ - EVP_EncryptUpdate(ctx, NULL, &outlen, NULL, sizeof(ccm_pt)); - /* Zero or one call to specify any AAD */ - EVP_EncryptUpdate(ctx, NULL, &outlen, ccm_adata, sizeof(ccm_adata)); - /* Encrypt plaintext: can only be called once */ - EVP_EncryptUpdate(ctx, outbuf, &outlen, ccm_pt, sizeof(ccm_pt)); - /* Output encrypted block */ - printf("Ciphertext:\n"); - BIO_dump_fp(stdout, outbuf, outlen); - /* Finalise: note get no output for CCM */ - EVP_EncryptFinal_ex(ctx, outbuf, &outlen); - /* Get tag */ - EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_GET_TAG, 16, outbuf); - /* Output tag */ - printf("Tag:\n"); - BIO_dump_fp(stdout, outbuf, 16); - EVP_CIPHER_CTX_free(ctx); - } +{ + EVP_CIPHER_CTX *ctx; + int outlen, tmplen; + unsigned char outbuf[1024]; + printf("AES CCM Encrypt:\n"); + printf("Plaintext:\n"); + BIO_dump_fp(stdout, ccm_pt, sizeof(ccm_pt)); + ctx = EVP_CIPHER_CTX_new(); + /* Set cipher type and mode */ + EVP_EncryptInit_ex(ctx, EVP_aes_192_ccm(), NULL, NULL, NULL); + /* Set nonce length if default 96 bits is not appropriate */ + EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_IVLEN, sizeof(ccm_nonce), NULL); + /* Set tag length */ + EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, sizeof(ccm_tag), NULL); + /* Initialise key and IV */ + EVP_EncryptInit_ex(ctx, NULL, NULL, ccm_key, ccm_nonce); + /* Set plaintext length: only needed if AAD is used */ + EVP_EncryptUpdate(ctx, NULL, &outlen, NULL, sizeof(ccm_pt)); + /* Zero or one call to specify any AAD */ + EVP_EncryptUpdate(ctx, NULL, &outlen, ccm_adata, sizeof(ccm_adata)); + /* Encrypt plaintext: can only be called once */ + EVP_EncryptUpdate(ctx, outbuf, &outlen, ccm_pt, sizeof(ccm_pt)); + /* Output encrypted block */ + printf("Ciphertext:\n"); + BIO_dump_fp(stdout, outbuf, outlen); + /* Finalise: note get no output for CCM */ + EVP_EncryptFinal_ex(ctx, outbuf, &outlen); + /* Get tag */ + EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_GET_TAG, 16, outbuf); + /* Output tag */ + printf("Tag:\n"); + BIO_dump_fp(stdout, outbuf, 16); + EVP_CIPHER_CTX_free(ctx); +} void aes_ccm_decrypt(void) - { - EVP_CIPHER_CTX *ctx; - int outlen, tmplen, rv; - unsigned char outbuf[1024]; - printf("AES CCM Derypt:\n"); - printf("Ciphertext:\n"); - BIO_dump_fp(stdout, ccm_ct, sizeof(ccm_ct)); - ctx = EVP_CIPHER_CTX_new(); - /* Select cipher */ - EVP_DecryptInit_ex(ctx, EVP_aes_192_ccm(), NULL, NULL, NULL); - /* Set nonce length, omit for 96 bits */ - EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_IVLEN, sizeof(ccm_nonce), NULL); - /* Set expected tag value */ - EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, - sizeof(ccm_tag), (void *)ccm_tag); - /* Specify key and IV */ - EVP_DecryptInit_ex(ctx, NULL, NULL, ccm_key, ccm_nonce); - /* Set ciphertext length: only needed if we have AAD */ - EVP_DecryptUpdate(ctx, NULL, &outlen, NULL, sizeof(ccm_ct)); - /* Zero or one call to specify any AAD */ - EVP_DecryptUpdate(ctx, NULL, &outlen, ccm_adata, sizeof(ccm_adata)); - /* Decrypt plaintext, verify tag: can only be called once */ - rv = EVP_DecryptUpdate(ctx, outbuf, &outlen, ccm_ct, sizeof(ccm_ct)); - /* Output decrypted block: if tag verify failed we get nothing */ - if (rv > 0) - { - printf("Plaintext:\n"); - BIO_dump_fp(stdout, outbuf, outlen); - } - else - printf("Plaintext not available: tag verify failed.\n"); - EVP_CIPHER_CTX_free(ctx); - } +{ + EVP_CIPHER_CTX *ctx; + int outlen, tmplen, rv; + unsigned char outbuf[1024]; + printf("AES CCM Derypt:\n"); + printf("Ciphertext:\n"); + BIO_dump_fp(stdout, ccm_ct, sizeof(ccm_ct)); + ctx = EVP_CIPHER_CTX_new(); + /* Select cipher */ + EVP_DecryptInit_ex(ctx, EVP_aes_192_ccm(), NULL, NULL, NULL); + /* Set nonce length, omit for 96 bits */ + EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_IVLEN, sizeof(ccm_nonce), NULL); + /* Set expected tag value */ + EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, + sizeof(ccm_tag), (void *)ccm_tag); + /* Specify key and IV */ + EVP_DecryptInit_ex(ctx, NULL, NULL, ccm_key, ccm_nonce); + /* Set ciphertext length: only needed if we have AAD */ + EVP_DecryptUpdate(ctx, NULL, &outlen, NULL, sizeof(ccm_ct)); + /* Zero or one call to specify any AAD */ + EVP_DecryptUpdate(ctx, NULL, &outlen, ccm_adata, sizeof(ccm_adata)); + /* Decrypt plaintext, verify tag: can only be called once */ + rv = EVP_DecryptUpdate(ctx, outbuf, &outlen, ccm_ct, sizeof(ccm_ct)); + /* Output decrypted block: if tag verify failed we get nothing */ + if (rv > 0) { + printf("Plaintext:\n"); + BIO_dump_fp(stdout, outbuf, outlen); + } else + printf("Plaintext not available: tag verify failed.\n"); + EVP_CIPHER_CTX_free(ctx); +} int main(int argc, char **argv) - { - aes_ccm_encrypt(); - aes_ccm_decrypt(); - } +{ + aes_ccm_encrypt(); + aes_ccm_decrypt(); +} |