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25 lines
605 B
C++
25 lines
605 B
C++
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#include <string>
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using std::string;
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#include "crypto_sign.h"
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string crypto_sign_open(const string &sm_string, const string &pk_string)
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{
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if (pk_string.size() != crypto_sign_PUBLICKEYBYTES) throw "incorrect public-key length";
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size_t smlen = sm_string.size();
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unsigned char m[smlen];
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unsigned long long mlen;
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for (int i = 0;i < smlen;++i) m[i] = sm_string[i];
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if (crypto_sign_open(
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m,
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&mlen,
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m,
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smlen,
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(const unsigned char *) pk_string.c_str()
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) != 0)
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throw "ciphertext fails verification";
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return string(
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(char *) m,
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mlen
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);
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}
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