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Return 0 if the given seckey is invalid in privkey_negate, privkey_tweak_add and privkey_tweak_mul

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This commit is contained in:
Jonas Nick
2019-12-17 16:52:07 +00:00
parent 8f814cddb9
commit 5894e1f1df
4 changed files with 77 additions and 20 deletions
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21
include/secp256k1.h
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@@ -579,9 +579,12 @@ SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_ec_pubkey_create(
/** Negates a private key in place.
*
* Returns: 1 always
* Returns: 0 if the given private key is invalid according to
* secp256k1_ec_seckey_verify. 1 otherwise
* Args: ctx: pointer to a context object
* In/Out: seckey: pointer to the 32-byte private key to be negated (cannot be NULL)
* In/Out: seckey: pointer to the 32-byte private key to be negated. The private
* key should be valid according to secp256k1_ec_seckey_verify
* (cannot be NULL)
*/
SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_ec_privkey_negate(
const secp256k1_context* ctx,
@@ -601,9 +604,10 @@ SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_ec_pubkey_negate(
/** Tweak a private key by adding tweak to it.
* Returns: 0 if the tweak was out of range (chance of around 1 in 2^128 for
* uniformly random 32-byte arrays, or if the resulting private key
* would be invalid (only when the tweak is the complement of the
* private key). 1 otherwise.
* uniformly random 32-byte arrays, or if the given private key is
* invalid according to secp256k1_ec_seckey_verify, or if the resulting
* private key would be invalid (only when the tweak is the complement
* of the private key). 1 otherwise.
* Args: ctx: pointer to a context object (cannot be NULL).
* In/Out: seckey: pointer to a 32-byte private key.
* In: tweak: pointer to a 32-byte tweak.
@@ -616,9 +620,10 @@ SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_ec_privkey_tweak_add(
/** Tweak a public key by adding tweak times the generator to it.
* Returns: 0 if the tweak was out of range (chance of around 1 in 2^128 for
* uniformly random 32-byte arrays, or if the resulting public key
* would be invalid (only when the tweak is the complement of the
* corresponding private key). 1 otherwise.
* uniformly random 32-byte arrays, or if the given private key is
* invalid according to secp256k1_ec_seckey_verify, or if the resulting
* public key would be invalid (only when the tweak is the complement
* of the corresponding private key). 1 otherwise.
* Args: ctx: pointer to a context object initialized for validation
* (cannot be NULL).
* In/Out: pubkey: pointer to a public key object.