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Added wolfcrypt API for the ChaCha20-Poly1305 AEAD.

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This commit is contained in:
Andrew Burks
2015-02-24 09:15:11 -08:00
parent 14b6254e6e
commit 8c3410d6c2
4 changed files with 589 additions and 99 deletions
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wolfcrypt/test/test.c
+243 -98
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@@ -56,6 +56,7 @@
#include <wolfssl/wolfcrypt/hc128.h>
#include <wolfssl/wolfcrypt/rabbit.h>
#include <wolfssl/wolfcrypt/chacha.h>
#include <wolfssl/wolfcrypt/chacha20_poly1305.h>
#include <wolfssl/wolfcrypt/pwdbased.h>
#include <wolfssl/wolfcrypt/ripemd.h>
#include <wolfssl/wolfcrypt/error-crypt.h>
@@ -2076,114 +2077,258 @@ int poly1305_test(void)
#if defined(HAVE_CHACHA) && defined(HAVE_POLY1305)
int chacha_poly_test(void)
{
const byte key[] = {
0x42,0x90,0xbc,0xb1,0x54,0x17,0x35,0x31,
0xf3,0x14,0xaf,0x57,0xf3,0xbe,0x3b,0x50,
0x06,0xda,0x37,0x1e,0xce,0x27,0x2a,0xfa,
0x1b,0x5d,0xbd,0xd1,0x10,0x0a,0x10,0x07
// Test #1 from Section 2.8.2 of
// https://tools.ietf.org/html/draft-irtf-cfrg-chacha20-poly1305
const byte key1[] = {
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
};
const byte input[] = {
0x86,0xd0,0x99,0x74,0x84,0x0b,0xde,0xd2,
0xa5,0xca
const byte plaintext1[] = {
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
};
const byte nonce[] = {
0x00,0x00,0x00,0x00,0xcd,0x7c,0xf6,0x7b,
0xe3,0x9c,0x79,0x4a
const byte iv1[] = {
0x07, 0x00, 0x00, 0x00, 0x40, 0x41, 0x42, 0x43,
0x44, 0x45, 0x46, 0x47
};
const byte ad[] = { /* aditional data */
0x87,0xe2,0x29,0xd4,0x50,0x08,0x45,0xa0,
0x79,0xc0,0x0a,0x00,0x00,0x00,0x00,0x00,
0x00,0x00
const byte aad1[] = { /* additional data */
0x50, 0x51, 0x52, 0x53, 0xc0, 0xc1, 0xc2, 0xc3,
0xc4, 0xc5, 0xc6, 0xc7
};
const byte test[] = { /* expected output from operation */
0xe3,0xe4,0x46,0xf7,0xed,0xe9,0xa1,0x9b,
0x62,0xa4,0x98,0xa5,0x9a,0x87,0xf9,0x82,
0xa1,0xfe,0xcb,0xac,0xd3,0xff,0xe8,0x29,
0x31,0x04
const byte cipher1[] = { /* expected output from operation */
0xd3, 0x1a, 0x8d, 0x34, 0x64, 0x8e, 0x60, 0xdb,
0x7b, 0x86, 0xaf, 0xbc, 0x53, 0xef, 0x7e, 0xc2,
0xa4, 0xad, 0xed, 0x51, 0x29, 0x6e, 0x08, 0xfe,
0xa9, 0xe2, 0xb5, 0xa7, 0x36, 0xee, 0x62, 0xd6,
0x3d, 0xbe, 0xa4, 0x5e, 0x8c, 0xa9, 0x67, 0x12,
0x82, 0xfa, 0xfb, 0x69, 0xda, 0x92, 0x72, 0x8b,
0x1a, 0x71, 0xde, 0x0a, 0x9e, 0x06, 0x0b, 0x29,
0x05, 0xd6, 0xa5, 0xb6, 0x7e, 0xcd, 0x3b, 0x36,
0x92, 0xdd, 0xbd, 0x7f, 0x2d, 0x77, 0x8b, 0x8c,
0x98, 0x03, 0xae, 0xe3, 0x28, 0x09, 0x1b, 0x58,
0xfa, 0xb3, 0x24, 0xe4, 0xfa, 0xd6, 0x75, 0x94,
0x55, 0x85, 0x80, 0x8b, 0x48, 0x31, 0xd7, 0xbc,
0x3f, 0xf4, 0xde, 0xf0, 0x8e, 0x4b, 0x7a, 0x9d,
0xe5, 0x76, 0xd2, 0x65, 0x86, 0xce, 0xc6, 0x4b,
0x61, 0x16
};
byte polyKey[64];
byte cipher[32];
byte tag[16]; /* tag made from Poly1305 MAC algorithm */
byte out[48]; /* cipher (32) + tag size of (16) */
byte msg[10]; /* message after decryption */
word32 keySz = 32;
int ret = 0;
ChaCha chaEnc, chaDec;
Poly1305 polyEnc, polyDec;
XMEMSET(polyKey, 0, sizeof(polyKey));
XMEMSET(cipher, 0, sizeof(cipher));
XMEMSET(tag, 0, sizeof(tag));
XMEMSET(out, 0, sizeof(out));
XMEMSET(msg, 0, sizeof(msg));
/***** ENCRYPTION ******/
/* Initialise chacha / poly and get poly key */
ret += wc_Chacha_SetKey(&chaEnc, key, keySz);
ret += wc_Chacha_SetIV(&chaEnc, nonce, 0); /* start with counter at 0 */
/* AEAD poly key is created by first run of ChaCha */
ret += wc_Chacha_Process(&chaEnc, polyKey, polyKey, 64);
ret += wc_Poly1305SetKey(&polyEnc, polyKey, 32);
/* encrypt the plain text then append tag */
ret += wc_Chacha_SetIV(&chaEnc, nonce, 1);
ret += wc_Chacha_Process(&chaEnc, cipher, input, sizeof(input));
/* tag is created with using ad and cipher (SSL/TLS uses padding as well) */
ret += wc_Poly1305Update(&polyEnc, ad, sizeof(ad));
ret += wc_Poly1305Update(&polyEnc, cipher, sizeof(input));
ret += wc_Poly1305Final(&polyEnc, tag);
XMEMCPY(out, cipher, sizeof(input)); /* copy cipher to first of out */
XMEMCPY(out + sizeof(input), tag, sizeof(tag)); /* append tag to out */
/****** TEST *****/
/* encrypted AEAD msg is now in out[] it's length is sizeof input + tag size
to test correctness we will compare the out[] to the expected output */
if (memcmp(out, test, sizeof(test)))
return -1062;
/****** DECRYPTION ******/
XMEMSET(polyKey, 0, sizeof(polyKey));
XMEMSET(tag, 0, sizeof(tag));
/* Initialise chacha / poly and get poly key */
ret += wc_Chacha_SetKey(&chaDec, key, keySz);
ret += wc_Chacha_SetIV(&chaDec, nonce, 0); /* start with counter at 0 */
/* AEAD poly key is created by first run of ChaCha */
ret += wc_Chacha_Process(&chaDec, polyKey, polyKey, 64);
ret += wc_Poly1305SetKey(&polyDec, polyKey, 32);
/* compare generated tag to what was sent */
ret += wc_Poly1305Update(&polyDec, ad, sizeof(ad));
ret += wc_Poly1305Update(&polyDec, out, sizeof(input)); /* cipher sent */
ret += wc_Poly1305Final(&polyDec, tag);
/* comparison of tags should be in constant time when implemented */
if (memcmp(tag, out + sizeof(input), sizeof(tag))) /* compare tags */
return -1063;
/* decrypt the cipher text */
ret += wc_Chacha_Process(&chaDec, msg, out, sizeof(input));
/****** TEST *****/
/* plain text msg has been recieved compare it to expected for test */
if (memcmp(msg, input, sizeof(input)))
const byte authTag1[] = { /* expected output from operation */
0x1a, 0xe1, 0x0b, 0x59, 0x4f, 0x09, 0xe2, 0x6a,
0x7e, 0x90, 0x2e, 0xcb, 0xd0, 0x60, 0x06, 0x91
};
// Test #2 from Appendix A.2 in
// https://tools.ietf.org/html/draft-irtf-cfrg-chacha20-poly1305
const byte key2[] = {
0x1c, 0x92, 0x40, 0xa5, 0xeb, 0x55, 0xd3, 0x8a,
0xf3, 0x33, 0x88, 0x86, 0x04, 0xf6, 0xb5, 0xf0,
0x47, 0x39, 0x17, 0xc1, 0x40, 0x2b, 0x80, 0x09,
0x9d, 0xca, 0x5c, 0xbc, 0x20, 0x70, 0x75, 0xc0
};
const byte plaintext2[] = {
0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74,
0x2d, 0x44, 0x72, 0x61, 0x66, 0x74, 0x73, 0x20,
0x61, 0x72, 0x65, 0x20, 0x64, 0x72, 0x61, 0x66,
0x74, 0x20, 0x64, 0x6f, 0x63, 0x75, 0x6d, 0x65,
0x6e, 0x74, 0x73, 0x20, 0x76, 0x61, 0x6c, 0x69,
0x64, 0x20, 0x66, 0x6f, 0x72, 0x20, 0x61, 0x20,
0x6d, 0x61, 0x78, 0x69, 0x6d, 0x75, 0x6d, 0x20,
0x6f, 0x66, 0x20, 0x73, 0x69, 0x78, 0x20, 0x6d,
0x6f, 0x6e, 0x74, 0x68, 0x73, 0x20, 0x61, 0x6e,
0x64, 0x20, 0x6d, 0x61, 0x79, 0x20, 0x62, 0x65,
0x20, 0x75, 0x70, 0x64, 0x61, 0x74, 0x65, 0x64,
0x2c, 0x20, 0x72, 0x65, 0x70, 0x6c, 0x61, 0x63,
0x65, 0x64, 0x2c, 0x20, 0x6f, 0x72, 0x20, 0x6f,
0x62, 0x73, 0x6f, 0x6c, 0x65, 0x74, 0x65, 0x64,
0x20, 0x62, 0x79, 0x20, 0x6f, 0x74, 0x68, 0x65,
0x72, 0x20, 0x64, 0x6f, 0x63, 0x75, 0x6d, 0x65,
0x6e, 0x74, 0x73, 0x20, 0x61, 0x74, 0x20, 0x61,
0x6e, 0x79, 0x20, 0x74, 0x69, 0x6d, 0x65, 0x2e,
0x20, 0x49, 0x74, 0x20, 0x69, 0x73, 0x20, 0x69,
0x6e, 0x61, 0x70, 0x70, 0x72, 0x6f, 0x70, 0x72,
0x69, 0x61, 0x74, 0x65, 0x20, 0x74, 0x6f, 0x20,
0x75, 0x73, 0x65, 0x20, 0x49, 0x6e, 0x74, 0x65,
0x72, 0x6e, 0x65, 0x74, 0x2d, 0x44, 0x72, 0x61,
0x66, 0x74, 0x73, 0x20, 0x61, 0x73, 0x20, 0x72,
0x65, 0x66, 0x65, 0x72, 0x65, 0x6e, 0x63, 0x65,
0x20, 0x6d, 0x61, 0x74, 0x65, 0x72, 0x69, 0x61,
0x6c, 0x20, 0x6f, 0x72, 0x20, 0x74, 0x6f, 0x20,
0x63, 0x69, 0x74, 0x65, 0x20, 0x74, 0x68, 0x65,
0x6d, 0x20, 0x6f, 0x74, 0x68, 0x65, 0x72, 0x20,
0x74, 0x68, 0x61, 0x6e, 0x20, 0x61, 0x73, 0x20,
0x2f, 0xe2, 0x80, 0x9c, 0x77, 0x6f, 0x72, 0x6b,
0x20, 0x69, 0x6e, 0x20, 0x70, 0x72, 0x6f, 0x67,
0x72, 0x65, 0x73, 0x73, 0x2e, 0x2f, 0xe2, 0x80,
0x9d
};
const byte iv2[] = {
0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07, 0x08
};
const byte aad2[] = { /* additional data */
0xf3, 0x33, 0x88, 0x86, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x4e, 0x91
};
const byte cipher2[] = { /* expected output from operation */
0x64, 0xa0, 0x86, 0x15, 0x75, 0x86, 0x1a, 0xf4,
0x60, 0xf0, 0x62, 0xc7, 0x9b, 0xe6, 0x43, 0xbd,
0x5e, 0x80, 0x5c, 0xfd, 0x34, 0x5c, 0xf3, 0x89,
0xf1, 0x08, 0x67, 0x0a, 0xc7, 0x6c, 0x8c, 0xb2,
0x4c, 0x6c, 0xfc, 0x18, 0x75, 0x5d, 0x43, 0xee,
0xa0, 0x9e, 0xe9, 0x4e, 0x38, 0x2d, 0x26, 0xb0,
0xbd, 0xb7, 0xb7, 0x3c, 0x32, 0x1b, 0x01, 0x00,
0xd4, 0xf0, 0x3b, 0x7f, 0x35, 0x58, 0x94, 0xcf,
0x33, 0x2f, 0x83, 0x0e, 0x71, 0x0b, 0x97, 0xce,
0x98, 0xc8, 0xa8, 0x4a, 0xbd, 0x0b, 0x94, 0x81,
0x14, 0xad, 0x17, 0x6e, 0x00, 0x8d, 0x33, 0xbd,
0x60, 0xf9, 0x82, 0xb1, 0xff, 0x37, 0xc8, 0x55,
0x97, 0x97, 0xa0, 0x6e, 0xf4, 0xf0, 0xef, 0x61,
0xc1, 0x86, 0x32, 0x4e, 0x2b, 0x35, 0x06, 0x38,
0x36, 0x06, 0x90, 0x7b, 0x6a, 0x7c, 0x02, 0xb0,
0xf9, 0xf6, 0x15, 0x7b, 0x53, 0xc8, 0x67, 0xe4,
0xb9, 0x16, 0x6c, 0x76, 0x7b, 0x80, 0x4d, 0x46,
0xa5, 0x9b, 0x52, 0x16, 0xcd, 0xe7, 0xa4, 0xe9,
0x90, 0x40, 0xc5, 0xa4, 0x04, 0x33, 0x22, 0x5e,
0xe2, 0x82, 0xa1, 0xb0, 0xa0, 0x6c, 0x52, 0x3e,
0xaf, 0x45, 0x34, 0xd7, 0xf8, 0x3f, 0xa1, 0x15,
0x5b, 0x00, 0x47, 0x71, 0x8c, 0xbc, 0x54, 0x6a,
0x0d, 0x07, 0x2b, 0x04, 0xb3, 0x56, 0x4e, 0xea,
0x1b, 0x42, 0x22, 0x73, 0xf5, 0x48, 0x27, 0x1a,
0x0b, 0xb2, 0x31, 0x60, 0x53, 0xfa, 0x76, 0x99,
0x19, 0x55, 0xeb, 0xd6, 0x31, 0x59, 0x43, 0x4e,
0xce, 0xbb, 0x4e, 0x46, 0x6d, 0xae, 0x5a, 0x10,
0x73, 0xa6, 0x72, 0x76, 0x27, 0x09, 0x7a, 0x10,
0x49, 0xe6, 0x17, 0xd9, 0x1d, 0x36, 0x10, 0x94,
0xfa, 0x68, 0xf0, 0xff, 0x77, 0x98, 0x71, 0x30,
0x30, 0x5b, 0xea, 0xba, 0x2e, 0xda, 0x04, 0xdf,
0x99, 0x7b, 0x71, 0x4d, 0x6c, 0x6f, 0x2c, 0x29,
0xa6, 0xad, 0x5c, 0xb4, 0x02, 0x2b, 0x02, 0x70,
0x9b
};
const byte authTag2[] = { /* expected output from operation */
0xee, 0xad, 0x9d, 0x67, 0x89, 0x0c, 0xbb, 0x22,
0x39, 0x23, 0x36, 0xfe, 0xa1, 0x85, 0x1f, 0x38
};
byte generatedCiphertext[272];
byte generatedPlaintext[272];
byte generatedAuthTag[CHACHA20_POLY1305_AEAD_AUTHTAG_SIZE];
int err;
XMEMSET( generatedCiphertext, 0, sizeof( generatedCiphertext ) );
XMEMSET( generatedAuthTag, 0, sizeof( generatedAuthTag ) );
XMEMSET( generatedPlaintext, 0, sizeof( generatedPlaintext ) );
// Test #1
err = wc_ChaCha20Poly1305_Encrypt( key1, iv1,
aad1, sizeof( aad1 ),
plaintext1, sizeof( plaintext1 ),
generatedCiphertext, generatedAuthTag );
if( err )
{
return err;
}
// -- Check the ciphertext and authtag
if( XMEMCMP( generatedCiphertext, cipher1, sizeof( cipher1 ) ) )
{
return -1064;
return ret;
}
if( XMEMCMP( generatedAuthTag, authTag1, sizeof( authTag1 ) ) )
{
return -1065;
}
// -- Verify decryption works
err = wc_ChaCha20Poly1305_Decrypt( key1, iv1,
aad1, sizeof( aad1 ),
cipher1, sizeof( cipher1 ),
authTag1, generatedPlaintext );
if( err )
{
return err;
}
if( XMEMCMP( generatedPlaintext, plaintext1, sizeof( plaintext1 ) ) )
{
return -1066;
}
XMEMSET( generatedCiphertext, 0, sizeof( generatedCiphertext ) );
XMEMSET( generatedAuthTag, 0, sizeof( generatedAuthTag ) );
XMEMSET( generatedPlaintext, 0, sizeof( generatedPlaintext ) );
// Test #2
err = wc_ChaCha20Poly1305_Encrypt( key2, iv2,
aad2, sizeof( aad2 ),
plaintext2, sizeof( plaintext2 ),
generatedCiphertext, generatedAuthTag );
if( err )
{
return err;
}
// -- Check the ciphertext and authtag
if( XMEMCMP( generatedCiphertext, cipher2, sizeof( cipher2 ) ) )
{
return -1067;
}
if( XMEMCMP( generatedAuthTag, authTag2, sizeof( authTag2 ) ) )
{
return -1068;
}
// -- Verify decryption works
err = wc_ChaCha20Poly1305_Decrypt( key2, iv2,
aad2, sizeof( aad2 ),
cipher2, sizeof( cipher2 ),
authTag2, generatedPlaintext );
if( err )
{
return err;
}
if( XMEMCMP( generatedPlaintext, plaintext2, sizeof( plaintext2 ) ) )
{
return -1069;
}
return err;
}
#endif /* HAVE_CHACHA && HAVE_POLY1305 */