From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001 From: Wojtek Kosior Date: Fri, 30 Apr 2021 00:33:56 +0200 Subject: initial/final commit --- openssl-1.1.0h/demos/evp/aesccm.c | 125 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 125 insertions(+) create mode 100644 openssl-1.1.0h/demos/evp/aesccm.c (limited to 'openssl-1.1.0h/demos/evp/aesccm.c') diff --git a/openssl-1.1.0h/demos/evp/aesccm.c b/openssl-1.1.0h/demos/evp/aesccm.c new file mode 100644 index 0000000..cc4d0b5 --- /dev/null +++ b/openssl-1.1.0h/demos/evp/aesccm.c @@ -0,0 +1,125 @@ +/* + * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +/* + * Simple AES CCM test program, uses the same NIST data used for the FIPS + * self test but uses the application level EVP APIs. + */ +#include +#include +#include + +/* 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_AEAD_SET_IVLEN, sizeof(ccm_nonce), + NULL); + /* Set tag length */ + EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_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_AEAD_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_AEAD_SET_IVLEN, sizeof(ccm_nonce), + NULL); + /* Set expected tag value */ + EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_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(); +} -- cgit v1.2.3