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8340d8c070
To be safe, we should never memcmp secrets. We don't do this currently outside tests, but we're about to. The tests to prove this as constant time are the tricky bit. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
19 lines
552 B
C
19 lines
552 B
C
#ifndef LIGHTNING_BITCOIN_PRIVKEY_H
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#define LIGHTNING_BITCOIN_PRIVKEY_H
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#include "config.h"
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#include <ccan/short_types/short_types.h>
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#include <ccan/structeq/structeq.h>
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/* General 256-bit secret, which must be private. Used in various places. */
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struct secret {
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u8 data[32];
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};
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/* You probably shouldn't compare secrets in non-const time! */
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bool secret_eq_consttime(const struct secret *a, const struct secret *b);
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/* This is a private key. Keep it secret. */
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struct privkey {
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struct secret secret;
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};
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#endif /* LIGHTNING_BITCOIN_PRIVKEY_H */
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