add chacha20 function
This commit is contained in:
Andrew Poelstra
committed by
Jonas Nick
Jonas Nick
parent
ed59fbe8b7
commit
8260800491
110
src/tests.c
110
src/tests.c
@@ -1007,12 +1007,122 @@ void scalar_test(void) {
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}
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void scalar_chacha_tests(void) {
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/* Test vectors 1 to 4 from https://tools.ietf.org/html/rfc8439#appendix-A
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* Note that scalar_set_b32 and scalar_get_b32 represent integers
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* underlying the scalar in big-endian format. */
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unsigned char expected1[64] = {
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0xad, 0xe0, 0xb8, 0x76, 0x90, 0x3d, 0xf1, 0xa0,
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0xe5, 0x6a, 0x5d, 0x40, 0x28, 0xbd, 0x86, 0x53,
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0xb8, 0x19, 0xd2, 0xbd, 0x1a, 0xed, 0x8d, 0xa0,
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0xcc, 0xef, 0x36, 0xa8, 0xc7, 0x0d, 0x77, 0x8b,
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0x7c, 0x59, 0x41, 0xda, 0x8d, 0x48, 0x57, 0x51,
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0x3f, 0xe0, 0x24, 0x77, 0x37, 0x4a, 0xd8, 0xb8,
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0xf4, 0xb8, 0x43, 0x6a, 0x1c, 0xa1, 0x18, 0x15,
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0x69, 0xb6, 0x87, 0xc3, 0x86, 0x65, 0xee, 0xb2
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};
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unsigned char expected2[64] = {
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0xbe, 0xe7, 0x07, 0x9f, 0x7a, 0x38, 0x51, 0x55,
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0x7c, 0x97, 0xba, 0x98, 0x0d, 0x08, 0x2d, 0x73,
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0xa0, 0x29, 0x0f, 0xcb, 0x69, 0x65, 0xe3, 0x48,
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0x3e, 0x53, 0xc6, 0x12, 0xed, 0x7a, 0xee, 0x32,
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0x76, 0x21, 0xb7, 0x29, 0x43, 0x4e, 0xe6, 0x9c,
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0xb0, 0x33, 0x71, 0xd5, 0xd5, 0x39, 0xd8, 0x74,
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0x28, 0x1f, 0xed, 0x31, 0x45, 0xfb, 0x0a, 0x51,
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0x1f, 0x0a, 0xe1, 0xac, 0x6f, 0x4d, 0x79, 0x4b
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};
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unsigned char seed3[32] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01
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};
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unsigned char expected3[64] = {
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0x24, 0x52, 0xeb, 0x3a, 0x92, 0x49, 0xf8, 0xec,
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0x8d, 0x82, 0x9d, 0x9b, 0xdd, 0xd4, 0xce, 0xb1,
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0xe8, 0x25, 0x20, 0x83, 0x60, 0x81, 0x8b, 0x01,
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0xf3, 0x84, 0x22, 0xb8, 0x5a, 0xaa, 0x49, 0xc9,
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0xbb, 0x00, 0xca, 0x8e, 0xda, 0x3b, 0xa7, 0xb4,
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0xc4, 0xb5, 0x92, 0xd1, 0xfd, 0xf2, 0x73, 0x2f,
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0x44, 0x36, 0x27, 0x4e, 0x25, 0x61, 0xb3, 0xc8,
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0xeb, 0xdd, 0x4a, 0xa6, 0xa0, 0x13, 0x6c, 0x00
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};
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unsigned char seed4[32] = {
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0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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unsigned char expected4[64] = {
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0xfb, 0x4d, 0xd5, 0x72, 0x4b, 0xc4, 0x2e, 0xf1,
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0xdf, 0x92, 0x26, 0x36, 0x32, 0x7f, 0x13, 0x94,
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0xa7, 0x8d, 0xea, 0x8f, 0x5e, 0x26, 0x90, 0x39,
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0xa1, 0xbe, 0xbb, 0xc1, 0xca, 0xf0, 0x9a, 0xae,
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0xa2, 0x5a, 0xb2, 0x13, 0x48, 0xa6, 0xb4, 0x6c,
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0x1b, 0x9d, 0x9b, 0xcb, 0x09, 0x2c, 0x5b, 0xe6,
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0x54, 0x6c, 0xa6, 0x24, 0x1b, 0xec, 0x45, 0xd5,
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0x87, 0xf4, 0x74, 0x73, 0x96, 0xf0, 0x99, 0x2e
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};
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unsigned char seed5[32] = {
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0x32, 0x56, 0x56, 0xf4, 0x29, 0x02, 0xc2, 0xf8,
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0xa3, 0x4b, 0x96, 0xf5, 0xa7, 0xf7, 0xe3, 0x6c,
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0x92, 0xad, 0xa5, 0x18, 0x1c, 0xe3, 0x41, 0xae,
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0xc3, 0xf3, 0x18, 0xd0, 0xfa, 0x5b, 0x72, 0x53
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};
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unsigned char expected5[64] = {
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0xe7, 0x56, 0xd3, 0x28, 0xe9, 0xc6, 0x19, 0x5c,
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0x6f, 0x17, 0x8e, 0x21, 0x8c, 0x1e, 0x72, 0x11,
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0xe7, 0xbd, 0x17, 0x0d, 0xac, 0x14, 0xad, 0xe9,
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0x3d, 0x9f, 0xb6, 0x92, 0xd6, 0x09, 0x20, 0xfb,
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0x43, 0x8e, 0x3b, 0x6d, 0xe3, 0x33, 0xdc, 0xc7,
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0x6c, 0x07, 0x6f, 0xbb, 0x1f, 0xb4, 0xc8, 0xb5,
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0xe3, 0x6c, 0xe5, 0x12, 0xd9, 0xd7, 0x64, 0x0c,
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0xf5, 0xa7, 0x0d, 0xab, 0x79, 0x03, 0xf1, 0x81
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};
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secp256k1_scalar exp_r1, exp_r2;
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secp256k1_scalar r1, r2;
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unsigned char seed0[32] = { 0 };
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secp256k1_scalar_chacha20(&r1, &r2, seed0, 0);
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secp256k1_scalar_set_b32(&exp_r1, &expected1[0], NULL);
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secp256k1_scalar_set_b32(&exp_r2, &expected1[32], NULL);
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CHECK(secp256k1_scalar_eq(&exp_r1, &r1));
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CHECK(secp256k1_scalar_eq(&exp_r2, &r2));
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secp256k1_scalar_chacha20(&r1, &r2, seed0, 1);
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secp256k1_scalar_set_b32(&exp_r1, &expected2[0], NULL);
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secp256k1_scalar_set_b32(&exp_r2, &expected2[32], NULL);
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CHECK(secp256k1_scalar_eq(&exp_r1, &r1));
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CHECK(secp256k1_scalar_eq(&exp_r2, &r2));
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secp256k1_scalar_chacha20(&r1, &r2, seed3, 1);
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secp256k1_scalar_set_b32(&exp_r1, &expected3[0], NULL);
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secp256k1_scalar_set_b32(&exp_r2, &expected3[32], NULL);
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CHECK(secp256k1_scalar_eq(&exp_r1, &r1));
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CHECK(secp256k1_scalar_eq(&exp_r2, &r2));
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secp256k1_scalar_chacha20(&r1, &r2, seed4, 2);
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secp256k1_scalar_set_b32(&exp_r1, &expected4[0], NULL);
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secp256k1_scalar_set_b32(&exp_r2, &expected4[32], NULL);
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CHECK(secp256k1_scalar_eq(&exp_r1, &r1));
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CHECK(secp256k1_scalar_eq(&exp_r2, &r2));
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secp256k1_scalar_chacha20(&r1, &r2, seed5, 0x6ff8602a7a78e2f2ULL);
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secp256k1_scalar_set_b32(&exp_r1, &expected5[0], NULL);
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secp256k1_scalar_set_b32(&exp_r2, &expected5[32], NULL);
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CHECK(secp256k1_scalar_eq(&exp_r1, &r1));
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CHECK(secp256k1_scalar_eq(&exp_r2, &r2));
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}
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void run_scalar_tests(void) {
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int i;
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for (i = 0; i < 128 * count; i++) {
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scalar_test();
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}
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scalar_chacha_tests();
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{
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/* (-1)+1 should be zero. */
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secp256k1_scalar s, o;
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