frost/secp256k1-zkp
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Make flags more explicit, add runtime checks.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2015-09-29 14:10:38 +09:30
committed by Pieter Wuille
parent 1a3e03a348
commit 1a368980c8
4 changed files with 35 additions and 18 deletions
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12
src/secp256k1.c
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@@ -62,13 +62,20 @@ secp256k1_context* secp256k1_context_create(unsigned int flags) {
ret->illegal_callback = default_illegal_callback;
ret->error_callback = default_error_callback;
if (EXPECT(!(flags & SECP256K1_CONTEXT_CHECK_BIT), 0)) {
secp256k1_callback_call(&ret->illegal_callback,
"Invalid flags");
free(ret);
return NULL;
}
secp256k1_ecmult_context_init(&ret->ecmult_ctx);
secp256k1_ecmult_gen_context_init(&ret->ecmult_gen_ctx);
if (flags & SECP256K1_CONTEXT_SIGN) {
if (flags & SECP256K1_CONTEXT_SIGN_BIT) {
secp256k1_ecmult_gen_context_build(&ret->ecmult_gen_ctx, &ret->error_callback);
}
if (flags & SECP256K1_CONTEXT_VERIFY) {
if (flags & SECP256K1_CONTEXT_VERIFY_BIT) {
secp256k1_ecmult_context_build(&ret->ecmult_ctx, &ret->error_callback);
}
@@ -166,6 +173,7 @@ int secp256k1_ec_pubkey_serialize(const secp256k1_context* ctx, unsigned char *o
ARG_CHECK(output != NULL);
ARG_CHECK(outputlen != NULL);
ARG_CHECK(pubkey != NULL);
ARG_CHECK(flags & SECP256K1_EC_CHECK_BIT);
return (secp256k1_pubkey_load(ctx, &Q, pubkey) &&
secp256k1_eckey_pubkey_serialize(&Q, output, outputlen, flags));
}