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Update SM2 Extensions

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Arrange source files
This commit is contained in:
Zhi Guan
2022-12-30 12:46:47 +08:00
parent 7be0df2b82
commit dc7b9e68ec
19 changed files with 698 additions and 303 deletions
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80
src/sm2_blind.c
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@@ -18,6 +18,9 @@
#include <gmssl/sm2_blind.h>
extern SM2_BN SM2_N;
extern SM2_BN SM2_ONE;
int sm2_blind_sign_commit(SM2_Fn k, uint8_t *commit, size_t *commitlen)
{
SM2_POINT K;
@@ -169,80 +172,3 @@ int sm2_blind_sign_unblind(SM2_BLIND_SIGN_CTX *ctx, const uint8_t blinded_sig_s[
gmssl_secure_clear(ctx, sizeof(*ctx));
return 1;
}
int test_sm2_blind_sign(void)
{
int r = -1;
// signer
SM2_KEY key;
SM2_Fn k;
uint8_t commit[65];
size_t commitlen;
// caller
SM2_KEY public_key;
SM2_BLIND_SIGN_CTX sign_ctx;
uint8_t msg[128] = {0};
uint8_t blinded_sig_s[32];
uint8_t blinded_sig_r[32];
uint8_t sig[128];
size_t siglen;
// verifier
SM2_SIGN_CTX verify_ctx;
// signer
if (sm2_key_generate(&key) != 1
|| sm2_key_set_public_key(&public_key, &key.public_key) != 1) {
error_print();
goto end;
}
if (sm2_blind_sign_commit(k, commit, &commitlen) != 1) {
error_print();
return -1;
}
format_bytes(stderr, 0, 0, "signer: commitment", commit, commitlen);
// caller
if (sm2_blind_sign_init(&sign_ctx, &public_key,
SM2_DEFAULT_ID, strlen(SM2_DEFAULT_ID)) != 1
|| sm2_blind_sign_update(&sign_ctx, msg, 32) != 1
|| sm2_blind_sign_update(&sign_ctx, msg + 32, 32) != 1
|| sm2_blind_sign_update(&sign_ctx, msg + 64, 64) != 1
|| sm2_blind_sign_finish(&sign_ctx, commit, commitlen, blinded_sig_r) != 1) {
error_print();
goto end;
}
format_bytes(stderr, 0, 0, "caller: blinded_sig_r", blinded_sig_r, sizeof(blinded_sig_r));
// signer
if (sm2_blind_sign(&key, k, blinded_sig_r, blinded_sig_s) != 1) {
error_print();
goto end;
}
format_bytes(stderr, 0, 0, "signer: blinded_sig_s", blinded_sig_s, sizeof(blinded_sig_s));
// caller
if (sm2_blind_sign_unblind(&sign_ctx, blinded_sig_s, sig, &siglen) != 1) {
error_print();
goto end;
}
format_bytes(stderr, 0, 0, "caller: unblinded_sig", sig, siglen);
// verifier
if (sm2_verify_init(&verify_ctx, &public_key,
SM2_DEFAULT_ID, strlen(SM2_DEFAULT_ID)) != 1
|| sm2_verify_update(&verify_ctx, msg, sizeof(msg)) != 1
|| (r = sm2_verify_finish(&verify_ctx, sig, siglen)) < 0) {
error_print();
goto end;
}
format_print(stderr, 0, 0, "verifier: %s\n", r == 1 ? "success" : "failure");
end:
gmssl_secure_clear(&key, sizeof(key));
gmssl_secure_clear(&sign_ctx, sizeof(sign_ctx));
return r;
}