#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/curve25519.h>
struct testvector {
const uint8_t sec_key[ED25519_PRIVATE_KEY_LENGTH];
const uint8_t pub_key[ED25519_PUBLIC_KEY_LENGTH];
const uint8_t signature[ED25519_SIGNATURE_LENGTH];
const uint8_t message[1024];
size_t message_len;
};
static const struct testvector testvectors[] = {
{
.sec_key = {
0x9d, 0x61, 0xb1, 0x9d, 0xef, 0xfd, 0x5a, 0x60,
0xba, 0x84, 0x4a, 0xf4, 0x92, 0xec, 0x2c, 0xc4,
0x44, 0x49, 0xc5, 0x69, 0x7b, 0x32, 0x69, 0x19,
0x70, 0x3b, 0xac, 0x03, 0x1c, 0xae, 0x7f, 0x60,
},
.pub_key = {
0xd7, 0x5a, 0x98, 0x01, 0x82, 0xb1, 0x0a, 0xb7,
0xd5, 0x4b, 0xfe, 0xd3, 0xc9, 0x64, 0x07, 0x3a,
0x0e, 0xe1, 0x72, 0xf3, 0xda, 0xa6, 0x23, 0x25,
0xaf, 0x02, 0x1a, 0x68, 0xf7, 0x07, 0x51, 0x1a,
},
.message = {
0x0,
},
.message_len = 0,
.signature = {
0xe5, 0x56, 0x43, 0x00, 0xc3, 0x60, 0xac, 0x72,
0x90, 0x86, 0xe2, 0xcc, 0x80, 0x6e, 0x82, 0x8a,
0x84, 0x87, 0x7f, 0x1e, 0xb8, 0xe5, 0xd9, 0x74,
0xd8, 0x73, 0xe0, 0x65, 0x22, 0x49, 0x01, 0x55,
0x5f, 0xb8, 0x82, 0x15, 0x90, 0xa3, 0x3b, 0xac,
0xc6, 0x1e, 0x39, 0x70, 0x1c, 0xf9, 0xb4, 0x6b,
0xd2, 0x5b, 0xf5, 0xf0, 0x59, 0x5b, 0xbe, 0x24,
0x65, 0x51, 0x41, 0x43, 0x8e, 0x7a, 0x10, 0x0b,
},
},
{
.sec_key = {
0x4c, 0xcd, 0x08, 0x9b, 0x28, 0xff, 0x96, 0xda,
0x9d, 0xb6, 0xc3, 0x46, 0xec, 0x11, 0x4e, 0x0f,
0x5b, 0x8a, 0x31, 0x9f, 0x35, 0xab, 0xa6, 0x24,
0xda, 0x8c, 0xf6, 0xed, 0x4f, 0xb8, 0xa6, 0xfb,
},
.pub_key = {
0x3d, 0x40, 0x17, 0xc3, 0xe8, 0x43, 0x89, 0x5a,
0x92, 0xb7, 0x0a, 0xa7, 0x4d, 0x1b, 0x7e, 0xbc,
0x9c, 0x98, 0x2c, 0xcf, 0x2e, 0xc4, 0x96, 0x8c,
0xc0, 0xcd, 0x55, 0xf1, 0x2a, 0xf4, 0x66, 0x0c,
},
.message = {
0x72,
},
.message_len = 1,
.signature = {
0x92, 0xa0, 0x09, 0xa9, 0xf0, 0xd4, 0xca, 0xb8,
0x72, 0x0e, 0x82, 0x0b, 0x5f, 0x64, 0x25, 0x40,
0xa2, 0xb2, 0x7b, 0x54, 0x16, 0x50, 0x3f, 0x8f,
0xb3, 0x76, 0x22, 0x23, 0xeb, 0xdb, 0x69, 0xda,
0x08, 0x5a, 0xc1, 0xe4, 0x3e, 0x15, 0x99, 0x6e,
0x45, 0x8f, 0x36, 0x13, 0xd0, 0xf1, 0x1d, 0x8c,
0x38, 0x7b, 0x2e, 0xae, 0xb4, 0x30, 0x2a, 0xee,
0xb0, 0x0d, 0x29, 0x16, 0x12, 0xbb, 0x0c, 0x00,
},
},
{
.sec_key = {
0xc5, 0xaa, 0x8d, 0xf4, 0x3f, 0x9f, 0x83, 0x7b,
0xed, 0xb7, 0x44, 0x2f, 0x31, 0xdc, 0xb7, 0xb1,
0x66, 0xd3, 0x85, 0x35, 0x07, 0x6f, 0x09, 0x4b,
0x85, 0xce, 0x3a, 0x2e, 0x0b, 0x44, 0x58, 0xf7,
},
.pub_key = {
0xfc, 0x51, 0xcd, 0x8e, 0x62, 0x18, 0xa1, 0xa3,
0x8d, 0xa4, 0x7e, 0xd0, 0x02, 0x30, 0xf0, 0x58,
0x08, 0x16, 0xed, 0x13, 0xba, 0x33, 0x03, 0xac,
0x5d, 0xeb, 0x91, 0x15, 0x48, 0x90, 0x80, 0x25,
},
.message = {
0xaf, 0x82,
},
.message_len = 2,
.signature = {
0x62, 0x91, 0xd6, 0x57, 0xde, 0xec, 0x24, 0x02,
0x48, 0x27, 0xe6, 0x9c, 0x3a, 0xbe, 0x01, 0xa3,
0x0c, 0xe5, 0x48, 0xa2, 0x84, 0x74, 0x3a, 0x44,
0x5e, 0x36, 0x80, 0xd7, 0xdb, 0x5a, 0xc3, 0xac,
0x18, 0xff, 0x9b, 0x53, 0x8d, 0x16, 0xf2, 0x90,
0xae, 0x67, 0xf7, 0x60, 0x98, 0x4d, 0xc6, 0x59,
0x4a, 0x7c, 0x15, 0xe9, 0x71, 0x6e, 0xd2, 0x8d,
0xc0, 0x27, 0xbe, 0xce, 0xea, 0x1e, 0xc4, 0x0a,
},
},
{
.sec_key = {
0xf5, 0xe5, 0x76, 0x7c, 0xf1, 0x53, 0x31, 0x95,
0x17, 0x63, 0x0f, 0x22, 0x68, 0x76, 0xb8, 0x6c,
0x81, 0x60, 0xcc, 0x58, 0x3b, 0xc0, 0x13, 0x74,
0x4c, 0x6b, 0xf2, 0x55, 0xf5, 0xcc, 0x0e, 0xe5,
},
.pub_key = {
0x27, 0x81, 0x17, 0xfc, 0x14, 0x4c, 0x72, 0x34,
0x0f, 0x67, 0xd0, 0xf2, 0x31, 0x6e, 0x83, 0x86,
0xce, 0xff, 0xbf, 0x2b, 0x24, 0x28, 0xc9, 0xc5,
0x1f, 0xef, 0x7c, 0x59, 0x7f, 0x1d, 0x42, 0x6e,
},
.message = {
0x08, 0xb8, 0xb2, 0xb7, 0x33, 0x42, 0x42, 0x43,
0x76, 0x0f, 0xe4, 0x26, 0xa4, 0xb5, 0x49, 0x08,
0x63, 0x21, 0x10, 0xa6, 0x6c, 0x2f, 0x65, 0x91,
0xea, 0xbd, 0x33, 0x45, 0xe3, 0xe4, 0xeb, 0x98,
0xfa, 0x6e, 0x26, 0x4b, 0xf0, 0x9e, 0xfe, 0x12,
0xee, 0x50, 0xf8, 0xf5, 0x4e, 0x9f, 0x77, 0xb1,
0xe3, 0x55, 0xf6, 0xc5, 0x05, 0x44, 0xe2, 0x3f,
0xb1, 0x43, 0x3d, 0xdf, 0x73, 0xbe, 0x84, 0xd8,
0x79, 0xde, 0x7c, 0x00, 0x46, 0xdc, 0x49, 0x96,
0xd9, 0xe7, 0x73, 0xf4, 0xbc, 0x9e, 0xfe, 0x57,
0x38, 0x82, 0x9a, 0xdb, 0x26, 0xc8, 0x1b, 0x37,
0xc9, 0x3a, 0x1b, 0x27, 0x0b, 0x20, 0x32, 0x9d,
0x65, 0x86, 0x75, 0xfc, 0x6e, 0xa5, 0x34, 0xe0,
0x81, 0x0a, 0x44, 0x32, 0x82, 0x6b, 0xf5, 0x8c,
0x94, 0x1e, 0xfb, 0x65, 0xd5, 0x7a, 0x33, 0x8b,
0xbd, 0x2e, 0x26, 0x64, 0x0f, 0x89, 0xff, 0xbc,
0x1a, 0x85, 0x8e, 0xfc, 0xb8, 0x55, 0x0e, 0xe3,
0xa5, 0xe1, 0x99, 0x8b, 0xd1, 0x77, 0xe9, 0x3a,
0x73, 0x63, 0xc3, 0x44, 0xfe, 0x6b, 0x19, 0x9e,
0xe5, 0xd0, 0x2e, 0x82, 0xd5, 0x22, 0xc4, 0xfe,
0xba, 0x15, 0x45, 0x2f, 0x80, 0x28, 0x8a, 0x82,
0x1a, 0x57, 0x91, 0x16, 0xec, 0x6d, 0xad, 0x2b,
0x3b, 0x31, 0x0d, 0xa9, 0x03, 0x40, 0x1a, 0xa6,
0x21, 0x00, 0xab, 0x5d, 0x1a, 0x36, 0x55, 0x3e,
0x06, 0x20, 0x3b, 0x33, 0x89, 0x0c, 0xc9, 0xb8,
0x32, 0xf7, 0x9e, 0xf8, 0x05, 0x60, 0xcc, 0xb9,
0xa3, 0x9c, 0xe7, 0x67, 0x96, 0x7e, 0xd6, 0x28,
0xc6, 0xad, 0x57, 0x3c, 0xb1, 0x16, 0xdb, 0xef,
0xef, 0xd7, 0x54, 0x99, 0xda, 0x96, 0xbd, 0x68,
0xa8, 0xa9, 0x7b, 0x92, 0x8a, 0x8b, 0xbc, 0x10,
0x3b, 0x66, 0x21, 0xfc, 0xde, 0x2b, 0xec, 0xa1,
0x23, 0x1d, 0x20, 0x6b, 0xe6, 0xcd, 0x9e, 0xc7,
0xaf, 0xf6, 0xf6, 0xc9, 0x4f, 0xcd, 0x72, 0x04,
0xed, 0x34, 0x55, 0xc6, 0x8c, 0x83, 0xf4, 0xa4,
0x1d, 0xa4, 0xaf, 0x2b, 0x74, 0xef, 0x5c, 0x53,
0xf1, 0xd8, 0xac, 0x70, 0xbd, 0xcb, 0x7e, 0xd1,
0x85, 0xce, 0x81, 0xbd, 0x84, 0x35, 0x9d, 0x44,
0x25, 0x4d, 0x95, 0x62, 0x9e, 0x98, 0x55, 0xa9,
0x4a, 0x7c, 0x19, 0x58, 0xd1, 0xf8, 0xad, 0xa5,
0xd0, 0x53, 0x2e, 0xd8, 0xa5, 0xaa, 0x3f, 0xb2,
0xd1, 0x7b, 0xa7, 0x0e, 0xb6, 0x24, 0x8e, 0x59,
0x4e, 0x1a, 0x22, 0x97, 0xac, 0xbb, 0xb3, 0x9d,
0x50, 0x2f, 0x1a, 0x8c, 0x6e, 0xb6, 0xf1, 0xce,
0x22, 0xb3, 0xde, 0x1a, 0x1f, 0x40, 0xcc, 0x24,
0x55, 0x41, 0x19, 0xa8, 0x31, 0xa9, 0xaa, 0xd6,
0x07, 0x9c, 0xad, 0x88, 0x42, 0x5d, 0xe6, 0xbd,
0xe1, 0xa9, 0x18, 0x7e, 0xbb, 0x60, 0x92, 0xcf,
0x67, 0xbf, 0x2b, 0x13, 0xfd, 0x65, 0xf2, 0x70,
0x88, 0xd7, 0x8b, 0x7e, 0x88, 0x3c, 0x87, 0x59,
0xd2, 0xc4, 0xf5, 0xc6, 0x5a, 0xdb, 0x75, 0x53,
0x87, 0x8a, 0xd5, 0x75, 0xf9, 0xfa, 0xd8, 0x78,
0xe8, 0x0a, 0x0c, 0x9b, 0xa6, 0x3b, 0xcb, 0xcc,
0x27, 0x32, 0xe6, 0x94, 0x85, 0xbb, 0xc9, 0xc9,
0x0b, 0xfb, 0xd6, 0x24, 0x81, 0xd9, 0x08, 0x9b,
0xec, 0xcf, 0x80, 0xcf, 0xe2, 0xdf, 0x16, 0xa2,
0xcf, 0x65, 0xbd, 0x92, 0xdd, 0x59, 0x7b, 0x07,
0x07, 0xe0, 0x91, 0x7a, 0xf4, 0x8b, 0xbb, 0x75,
0xfe, 0xd4, 0x13, 0xd2, 0x38, 0xf5, 0x55, 0x5a,
0x7a, 0x56, 0x9d, 0x80, 0xc3, 0x41, 0x4a, 0x8d,
0x08, 0x59, 0xdc, 0x65, 0xa4, 0x61, 0x28, 0xba,
0xb2, 0x7a, 0xf8, 0x7a, 0x71, 0x31, 0x4f, 0x31,
0x8c, 0x78, 0x2b, 0x23, 0xeb, 0xfe, 0x80, 0x8b,
0x82, 0xb0, 0xce, 0x26, 0x40, 0x1d, 0x2e, 0x22,
0xf0, 0x4d, 0x83, 0xd1, 0x25, 0x5d, 0xc5, 0x1a,
0xdd, 0xd3, 0xb7, 0x5a, 0x2b, 0x1a, 0xe0, 0x78,
0x45, 0x04, 0xdf, 0x54, 0x3a, 0xf8, 0x96, 0x9b,
0xe3, 0xea, 0x70, 0x82, 0xff, 0x7f, 0xc9, 0x88,
0x8c, 0x14, 0x4d, 0xa2, 0xaf, 0x58, 0x42, 0x9e,
0xc9, 0x60, 0x31, 0xdb, 0xca, 0xd3, 0xda, 0xd9,
0xaf, 0x0d, 0xcb, 0xaa, 0xaf, 0x26, 0x8c, 0xb8,
0xfc, 0xff, 0xea, 0xd9, 0x4f, 0x3c, 0x7c, 0xa4,
0x95, 0xe0, 0x56, 0xa9, 0xb4, 0x7a, 0xcd, 0xb7,
0x51, 0xfb, 0x73, 0xe6, 0x66, 0xc6, 0xc6, 0x55,
0xad, 0xe8, 0x29, 0x72, 0x97, 0xd0, 0x7a, 0xd1,
0xba, 0x5e, 0x43, 0xf1, 0xbc, 0xa3, 0x23, 0x01,
0x65, 0x13, 0x39, 0xe2, 0x29, 0x04, 0xcc, 0x8c,
0x42, 0xf5, 0x8c, 0x30, 0xc0, 0x4a, 0xaf, 0xdb,
0x03, 0x8d, 0xda, 0x08, 0x47, 0xdd, 0x98, 0x8d,
0xcd, 0xa6, 0xf3, 0xbf, 0xd1, 0x5c, 0x4b, 0x4c,
0x45, 0x25, 0x00, 0x4a, 0xa0, 0x6e, 0xef, 0xf8,
0xca, 0x61, 0x78, 0x3a, 0xac, 0xec, 0x57, 0xfb,
0x3d, 0x1f, 0x92, 0xb0, 0xfe, 0x2f, 0xd1, 0xa8,
0x5f, 0x67, 0x24, 0x51, 0x7b, 0x65, 0xe6, 0x14,
0xad, 0x68, 0x08, 0xd6, 0xf6, 0xee, 0x34, 0xdf,
0xf7, 0x31, 0x0f, 0xdc, 0x82, 0xae, 0xbf, 0xd9,
0x04, 0xb0, 0x1e, 0x1d, 0xc5, 0x4b, 0x29, 0x27,
0x09, 0x4b, 0x2d, 0xb6, 0x8d, 0x6f, 0x90, 0x3b,
0x68, 0x40, 0x1a, 0xde, 0xbf, 0x5a, 0x7e, 0x08,
0xd7, 0x8f, 0xf4, 0xef, 0x5d, 0x63, 0x65, 0x3a,
0x65, 0x04, 0x0c, 0xf9, 0xbf, 0xd4, 0xac, 0xa7,
0x98, 0x4a, 0x74, 0xd3, 0x71, 0x45, 0x98, 0x67,
0x80, 0xfc, 0x0b, 0x16, 0xac, 0x45, 0x16, 0x49,
0xde, 0x61, 0x88, 0xa7, 0xdb, 0xdf, 0x19, 0x1f,
0x64, 0xb5, 0xfc, 0x5e, 0x2a, 0xb4, 0x7b, 0x57,
0xf7, 0xf7, 0x27, 0x6c, 0xd4, 0x19, 0xc1, 0x7a,
0x3c, 0xa8, 0xe1, 0xb9, 0x39, 0xae, 0x49, 0xe4,
0x88, 0xac, 0xba, 0x6b, 0x96, 0x56, 0x10, 0xb5,
0x48, 0x01, 0x09, 0xc8, 0xb1, 0x7b, 0x80, 0xe1,
0xb7, 0xb7, 0x50, 0xdf, 0xc7, 0x59, 0x8d, 0x5d,
0x50, 0x11, 0xfd, 0x2d, 0xcc, 0x56, 0x00, 0xa3,
0x2e, 0xf5, 0xb5, 0x2a, 0x1e, 0xcc, 0x82, 0x0e,
0x30, 0x8a, 0xa3, 0x42, 0x72, 0x1a, 0xac, 0x09,
0x43, 0xbf, 0x66, 0x86, 0xb6, 0x4b, 0x25, 0x79,
0x37, 0x65, 0x04, 0xcc, 0xc4, 0x93, 0xd9, 0x7e,
0x6a, 0xed, 0x3f, 0xb0, 0xf9, 0xcd, 0x71, 0xa4,
0x3d, 0xd4, 0x97, 0xf0, 0x1f, 0x17, 0xc0, 0xe2,
0xcb, 0x37, 0x97, 0xaa, 0x2a, 0x2f, 0x25, 0x66,
0x56, 0x16, 0x8e, 0x6c, 0x49, 0x6a, 0xfc, 0x5f,
0xb9, 0x32, 0x46, 0xf6, 0xb1, 0x11, 0x63, 0x98,
0xa3, 0x46, 0xf1, 0xa6, 0x41, 0xf3, 0xb0, 0x41,
0xe9, 0x89, 0xf7, 0x91, 0x4f, 0x90, 0xcc, 0x2c,
0x7f, 0xff, 0x35, 0x78, 0x76, 0xe5, 0x06, 0xb5,
0x0d, 0x33, 0x4b, 0xa7, 0x7c, 0x22, 0x5b, 0xc3,
0x07, 0xba, 0x53, 0x71, 0x52, 0xf3, 0xf1, 0x61,
0x0e, 0x4e, 0xaf, 0xe5, 0x95, 0xf6, 0xd9, 0xd9,
0x0d, 0x11, 0xfa, 0xa9, 0x33, 0xa1, 0x5e, 0xf1,
0x36, 0x95, 0x46, 0x86, 0x8a, 0x7f, 0x3a, 0x45,
0xa9, 0x67, 0x68, 0xd4, 0x0f, 0xd9, 0xd0, 0x34,
0x12, 0xc0, 0x91, 0xc6, 0x31, 0x5c, 0xf4, 0xfd,
0xe7, 0xcb, 0x68, 0x60, 0x69, 0x37, 0x38, 0x0d,
0xb2, 0xea, 0xaa, 0x70, 0x7b, 0x4c, 0x41, 0x85,
0xc3, 0x2e, 0xdd, 0xcd, 0xd3, 0x06, 0x70, 0x5e,
0x4d, 0xc1, 0xff, 0xc8, 0x72, 0xee, 0xee, 0x47,
0x5a, 0x64, 0xdf, 0xac, 0x86, 0xab, 0xa4, 0x1c,
0x06, 0x18, 0x98, 0x3f, 0x87, 0x41, 0xc5, 0xef,
0x68, 0xd3, 0xa1, 0x01, 0xe8, 0xa3, 0xb8, 0xca,
0xc6, 0x0c, 0x90, 0x5c, 0x15, 0xfc, 0x91, 0x08,
0x40, 0xb9, 0x4c, 0x00, 0xa0, 0xb9, 0xd0,
},
.message_len = 1023,
.signature = {
0x0a, 0xab, 0x4c, 0x90, 0x05, 0x01, 0xb3, 0xe2,
0x4d, 0x7c, 0xdf, 0x46, 0x63, 0x32, 0x6a, 0x3a,
0x87, 0xdf, 0x5e, 0x48, 0x43, 0xb2, 0xcb, 0xdb,
0x67, 0xcb, 0xf6, 0xe4, 0x60, 0xfe, 0xc3, 0x50,
0xaa, 0x53, 0x71, 0xb1, 0x50, 0x8f, 0x9f, 0x45,
0x28, 0xec, 0xea, 0x23, 0xc4, 0x36, 0xd9, 0x4b,
0x5e, 0x8f, 0xcd, 0x4f, 0x68, 0x1e, 0x30, 0xa6,
0xac, 0x00, 0xa9, 0x70, 0x4a, 0x18, 0x8a, 0x03,
},
},
{
.sec_key = {
0x83, 0x3f, 0xe6, 0x24, 0x09, 0x23, 0x7b, 0x9d,
0x62, 0xec, 0x77, 0x58, 0x75, 0x20, 0x91, 0x1e,
0x9a, 0x75, 0x9c, 0xec, 0x1d, 0x19, 0x75, 0x5b,
0x7d, 0xa9, 0x01, 0xb9, 0x6d, 0xca, 0x3d, 0x42,
},
.pub_key = {
0xec, 0x17, 0x2b, 0x93, 0xad, 0x5e, 0x56, 0x3b,
0xf4, 0x93, 0x2c, 0x70, 0xe1, 0x24, 0x50, 0x34,
0xc3, 0x54, 0x67, 0xef, 0x2e, 0xfd, 0x4d, 0x64,
0xeb, 0xf8, 0x19, 0x68, 0x34, 0x67, 0xe2, 0xbf,
},
.message = {
0xdd, 0xaf, 0x35, 0xa1, 0x93, 0x61, 0x7a, 0xba,
0xcc, 0x41, 0x73, 0x49, 0xae, 0x20, 0x41, 0x31,
0x12, 0xe6, 0xfa, 0x4e, 0x89, 0xa9, 0x7e, 0xa2,
0x0a, 0x9e, 0xee, 0xe6, 0x4b, 0x55, 0xd3, 0x9a,
0x21, 0x92, 0x99, 0x2a, 0x27, 0x4f, 0xc1, 0xa8,
0x36, 0xba, 0x3c, 0x23, 0xa3, 0xfe, 0xeb, 0xbd,
0x45, 0x4d, 0x44, 0x23, 0x64, 0x3c, 0xe8, 0x0e,
0x2a, 0x9a, 0xc9, 0x4f, 0xa5, 0x4c, 0xa4, 0x9f,
},
.message_len = 64,
.signature = {
0xdc, 0x2a, 0x44, 0x59, 0xe7, 0x36, 0x96, 0x33,
0xa5, 0x2b, 0x1b, 0xf2, 0x77, 0x83, 0x9a, 0x00,
0x20, 0x10, 0x09, 0xa3, 0xef, 0xbf, 0x3e, 0xcb,
0x69, 0xbe, 0xa2, 0x18, 0x6c, 0x26, 0xb5, 0x89,
0x09, 0x35, 0x1f, 0xc9, 0xac, 0x90, 0xb3, 0xec,
0xfd, 0xfb, 0xc7, 0xc6, 0x64, 0x31, 0xe0, 0x30,
0x3d, 0xca, 0x17, 0x9c, 0x13, 0x8a, 0xc1, 0x7a,
0xd9, 0xbe, 0xf1, 0x17, 0x73, 0x31, 0xa7, 0x04,
},
},
};
const size_t num_testvectors = sizeof(testvectors) / sizeof(testvectors[0]);
static int
test_ED25519_verify(void)
{
size_t i;
int failed = 0;
for (i = 0; i < num_testvectors; i++) {
const struct testvector *tc = &testvectors[i];
if (!ED25519_verify(tc->message, tc->message_len, tc->signature,
tc->pub_key)) {
warnx("failed verification in test case %zu", i);
failed = 1;
}
}
return failed;
}
static int
test_ED25519_sign(void)
{
size_t i;
int failed = 0;
for (i = 0; i < num_testvectors; i++) {
const struct testvector *tc = &testvectors[i];
uint8_t signature[64];
if (!ED25519_sign(signature, tc->message, tc->message_len,
tc->pub_key, tc->sec_key)) {
warnx("failed signature in test case %zu", i);
failed = 1;
}
if (memcmp(tc->signature, signature, sizeof signature) != 0) {
warnx("signature mismatch in test case %zu", i);
failed = 1;
}
}
return failed;
}
static void
hexdump(const unsigned char *buf, size_t len)
{
size_t i;
for (i = 1; i <= len; i++)
fprintf(stderr, " 0x%02hhx,%s", buf[i - 1], i % 8 ? "" : "\n");
if (len % 8)
fprintf(stderr, "\n");
}
static void
dump_info(const uint8_t *message, size_t message_len, const uint8_t *public_key,
const uint8_t *private_key, const uint8_t *signature)
{
fprintf(stderr, "message:\n");
hexdump(message, message_len);
fprintf(stderr, "public key:\n");
hexdump(public_key, ED25519_PUBLIC_KEY_LENGTH);
fprintf(stderr, "private key:\n");
hexdump(private_key, ED25519_PRIVATE_KEY_LENGTH);
if (signature != NULL) {
fprintf(stderr, "signature:\n");
hexdump(signature, ED25519_SIGNATURE_LENGTH);
}
}
static const uint8_t order[] = {
0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
};
static void
modify_signature(uint8_t *signature)
{
uint16_t sum;
uint8_t *upper_half = &signature[32];
uint16_t carry = 0;
size_t i;
for (i = 0; i < sizeof(order); i++) {
sum = carry + order[i] + upper_half[i];
carry = (sum > 0xff);
upper_half[i] = sum & 0xff;
}
}
static int
test_ED25519_signature_malleability(void)
{
uint8_t public_key[ED25519_PUBLIC_KEY_LENGTH];
uint8_t private_key[ED25519_PRIVATE_KEY_LENGTH];
uint8_t message[32];
uint8_t signature[ED25519_SIGNATURE_LENGTH];
int failed = 1;
ED25519_keypair(public_key, private_key);
arc4random_buf(message, sizeof(message));
if (!ED25519_sign(signature, message, sizeof(message),
public_key, private_key)) {
fprintf(stderr, "Failed to sign random message\n");
dump_info(message, sizeof(message), public_key, private_key,
NULL);
goto err;
}
if (!ED25519_verify(message, sizeof(message), signature, public_key)) {
fprintf(stderr, "Failed to verify random message\n");
dump_info(message, sizeof(message), public_key, private_key,
signature);
goto err;
}
modify_signature(signature);
if (ED25519_verify(message, sizeof(message), signature, public_key)) {
fprintf(stderr, "Verified with modified signature\n");
dump_info(message, sizeof(message), public_key, private_key,
signature);
goto err;
}
failed = 0;
err:
return failed;
}
int
main(int argc, char *argv[])
{
int failed = 0;
failed |= test_ED25519_verify();
failed |= test_ED25519_sign();
failed |= test_ED25519_signature_malleability();
return failed;
}
