74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
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// SPDX-License-Identifier: Apache-2.0
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#ifndef SQISIGN_H
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#define SQISIGN_H
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#include <stdint.h>
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/**
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* SQIsign keypair generation.
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*
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* The implementation corresponds to SQIsign.CompactKeyGen() in the SQIsign spec.
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* The caller is responsible to allocate sufficient memory to hold pk and sk.
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*
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* @param[out] pk SQIsign public key
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* @param[out] sk SQIsign secret key
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* @return int status code
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*/
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int sqisign_keypair(unsigned char *pk, unsigned char *sk);
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/**
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* SQIsign signature generation.
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*
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* The implementation performs SQIsign.expandSK() + SQIsign.sign() in the SQIsign spec.
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* Keys provided is a compacted secret keys.
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* The caller is responsible to allocate sufficient memory to hold sm.
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*
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* @param[out] sm Signature concatenated with message
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* @param[out] smlen Pointer to the length of sm
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* @param[in] m Message to be signed
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* @param[in] mlen Message length
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* @param[in] sk Compacted secret key
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* @return int status code
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*/
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int sqisign_sign(unsigned char *sm,
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unsigned long long *smlen, const unsigned char *m,
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unsigned long long mlen, const unsigned char *sk);
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/**
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* SQIsign open signature.
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*
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* The implementation performs SQIsign.verify(). If the signature verification succeeded, the original message is stored in m.
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* Keys provided is a compact public key.
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* The caller is responsible to allocate sufficient memory to hold m.
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*
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* @param[out] m Message stored if verification succeeds
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* @param[out] mlen Pointer to the length of m
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* @param[in] sm Signature concatenated with message
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* @param[in] smlen Length of sm
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* @param[in] pk Compacted public key
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* @return int status code
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*/
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int sqisign_open(unsigned char *m,
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unsigned long long *mlen, const unsigned char *sm,
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unsigned long long smlen, const unsigned char *pk);
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/**
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* SQIsign verify signature.
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*
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* If the signature verification succeeded, returns 0, otherwise 1.
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*
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* @param[out] m Message stored if verification succeeds
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* @param[out] mlen Pointer to the length of m
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* @param[in] sig Signature
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* @param[in] siglen Length of sig
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* @param[in] pk Compacted public key
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* @return int 0 if verification succeeded, 1 otherwise.
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*/
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int sqisign_verify(const unsigned char *m,
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unsigned long long mlen, const unsigned char *sig,
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unsigned long long siglen, const unsigned char *pk);
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#endif
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