Created
November 12, 2016 11:11
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OpenSSL 1.1+ ChaCha20-Poly1305 API test (RFC 7539 2.8.2)
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#include <string.h> | |
#include <stdint.h> | |
#include <openssl/evp.h> | |
uint8_t data[] = { | |
0x4c, 0x61, 0x64, 0x69, 0x65, 0x73, 0x20, 0x61, 0x6e, 0x64, 0x20, 0x47, 0x65, 0x6e, 0x74, 0x6c, | |
0x65, 0x6d, 0x65, 0x6e, 0x20, 0x6f, 0x66, 0x20, 0x74, 0x68, 0x65, 0x20, 0x63, 0x6c, 0x61, 0x73, | |
0x73, 0x20, 0x6f, 0x66, 0x20, 0x27, 0x39, 0x39, 0x3a, 0x20, 0x49, 0x66, 0x20, 0x49, 0x20, 0x63, | |
0x6f, 0x75, 0x6c, 0x64, 0x20, 0x6f, 0x66, 0x66, 0x65, 0x72, 0x20, 0x79, 0x6f, 0x75, 0x20, 0x6f, | |
0x6e, 0x6c, 0x79, 0x20, 0x6f, 0x6e, 0x65, 0x20, 0x74, 0x69, 0x70, 0x20, 0x66, 0x6f, 0x72, 0x20, | |
0x74, 0x68, 0x65, 0x20, 0x66, 0x75, 0x74, 0x75, 0x72, 0x65, 0x2c, 0x20, 0x73, 0x75, 0x6e, 0x73, | |
0x63, 0x72, 0x65, 0x65, 0x6e, 0x20, 0x77, 0x6f, 0x75, 0x6c, 0x64, 0x20, 0x62, 0x65, 0x20, 0x69, | |
0x74, 0x2e | |
}; | |
uint8_t aad[] = { | |
0x50, 0x51, 0x52, 0x53, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7 | |
}; | |
uint8_t key[] = { | |
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, | |
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f | |
}; | |
uint8_t nonce[] = { | |
0x07, 0x00, 0x00, 0x00, | |
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47 | |
}; | |
uint8_t tag[] = { | |
0x1a, 0xe1, 0x0b, 0x59, 0x4f, 0x09, 0xe2, 0x6a, 0x7e, 0x90, 0x2e, 0xcb, 0xd0, 0x60, 0x06, 0x91 | |
}; | |
int main() { | |
EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new(); | |
int outlen; | |
uint8_t out[4096]; | |
uint8_t tagout[12]; | |
EVP_EncryptInit_ex(ctx, EVP_chacha20_poly1305(), 0, 0, 0); | |
EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, 12, 0); | |
EVP_EncryptInit_ex(ctx, NULL, NULL, key, nonce); | |
EVP_EncryptUpdate(ctx, NULL, &outlen, aad, sizeof(aad)); | |
EVP_EncryptUpdate(ctx, out, &outlen, data, sizeof(data)); | |
EVP_EncryptFinal_ex(ctx, out, &outlen); | |
EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 12, tagout); | |
return memcmp(tag, tagout, 12); | |
} |
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