Hey - why not make this a test?
On 5 March 2013 18:31, Dr. Stephen Henson <st...@openssl.org> wrote:
> This is an automated email from the git hooks/post-receive script. It was
> generated because a ref change was pushed to the repository containing
> the project "OpenSSL source code".
>
> The branch, master has been updated
> via e942c15451e1dedbe3a86e0e21a5312e5c43403e (commit)
> from 897dfd4eaa6eff4d5184df9698f32289f5e93a8f (commit)
>
> Those revisions listed above that are new to this repository have
> not appeared on any other notification email; so we list those
> revisions in full, below.
>
> - Log -----------------------------------------------------------------
> commit e942c15451e1dedbe3a86e0e21a5312e5c43403e
> Author: Dr. Stephen Henson <st...@openssl.org>
> Date: Tue Mar 5 18:29:14 2013 +0000
>
> Initial CCM code.
>
> Simple example of CCM code use: translated from the FIPS self tests.
>
> -----------------------------------------------------------------------
>
> Summary of changes:
> demos/evp/aesccm.c | 115
> ++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 115 insertions(+)
> create mode 100644 demos/evp/aesccm.c
>
> diff --git a/demos/evp/aesccm.c b/demos/evp/aesccm.c
> new file mode 100644
> index 0000000..375d834
> --- /dev/null
> +++ b/demos/evp/aesccm.c
> @@ -0,0 +1,115 @@
> +/* 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>
> +#include <openssl/bio.h>
> +#include <openssl/evp.h>
> +
> +/* 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
> +};
> +
> +static const unsigned char ccm_nonce[] = {
> + 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
> +};
> +
> +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
> +};
> +
> +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
> +};
> +
> +static const unsigned char ccm_tag[] = {
> + 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);
> + }
> +
> +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_EncryptUpdate(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();
> + }
>
>
> hooks/post-receive
> --
> OpenSSL source code
> ______________________________________________________________________
> OpenSSL Project http://www.openssl.org
> CVS Repository Commit List openssl-...@openssl.org
> Automated List Manager majord...@openssl.org
______________________________________________________________________
OpenSSL Project http://www.openssl.org
Development Mailing List openssl-dev@openssl.org
Automated List Manager majord...@openssl.org
