Lucas
22333c5d6e
Let the application deal with converting time_t to uint64_t. For TOTP, it's just a counter. While there, rename 'granularity' to 'step', as it's used in RFC 6238.
26 lines
742 B
C
26 lines
742 B
C
/*
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* otpcli - CLI utility for generating OTPs
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*
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* Written in 2020 by Lucas
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*
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* To the extent possible under law, the author(s) have dedicated all
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* copyright and related and neighboring rights to this software to the
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* public domain worldwide. This software is distributed without any
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* warranty.
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*
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* You should have received a copy of the CC0 Public Domain Dedication
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* along with this software. If not, see
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* <http://creativecommons.org/publicdomain/zero/1.0/>.
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*/
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#include <stdint.h>
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enum otp_hmac {
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OTP_HMAC_SHA1,
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OTP_HMAC_SHA256,
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OTP_HMAC_SHA512,
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};
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int32_t hotp(enum otp_hmac, const void *, size_t, uint64_t, unsigned int);
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int32_t totp(enum otp_hmac, const void *, size_t, uint64_t, unsigned int,
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unsigned int);
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