29 lines
817 B
C++
29 lines
817 B
C++
#include "num.cpp"
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#include "field.cpp"
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#include "group.cpp"
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#include "ecmult.cpp"
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#include "ecdsa.cpp"
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namespace secp256k1 {
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int VerifyECDSA(const unsigned char *msg, int msglen, const unsigned char *sig, int siglen, const unsigned char *pubkey, int pubkeylen) {
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Number m;
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Signature s;
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GroupElemJac q;
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m.SetBytes(msg, msglen);
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if (!ParsePubKey(q, pubkey, pubkeylen))
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return -1;
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if (!s.Parse(sig, siglen)) {
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fprintf(stderr, "Can't parse signature: ");
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for (int i=0; i<siglen; i++) fprintf(stderr,"%02x", sig[i]);
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fprintf(stderr, "\n");
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return -2;
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}
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// fprintf(stderr, "Verifying ECDSA: msg=%s pubkey=%s sig=%s\n", m.ToString().c_str(), q.ToString().c_str(), s.ToString().c_str());
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if (!s.Verify(q, m))
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return 0;
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return 1;
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}
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} |