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contracts/generateSigningKeypair: Doc explicit sk size #437

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Oct 15, 2024
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contracts/generateSigningKeypair: Doc explicit sk size #437

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26 changes: 20 additions & 6 deletions contracts/contracts/Sapphire.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -321,16 +321,27 @@ library Sapphire {
* ##### Secp256r1: 4,000 gas
* - `7` (`Secp256r1PrehashedSha256`)
*
* #### Public Key Format
* ##### Secp384r1: 18,000 gas
* - `8` (`Secp384r1PrehashedSha384`)
*
* #### Key Formats
*
* ##### Ed25519
*
* 32 bytes
* Public key: 32 bytes
* Secret key: 32 bytes
*
* ##### Secp256k1 & Secp256r1
*
* 33 bytes, compressed format (`0x02` or `0x03` prefix, then 32 byte X
* coordinate).
* Public key: 33 bytes, compressed format (`0x02` or `0x03` prefix, then 32
* byte X coordinate).
* Secret key: 32 bytes
*
* ##### Secp384r1
*
* Public key: 49 bytes, compressed format (`0x02` or `0x03` prefix, then 48
* byte X coordinate).
* Secret key: 48 bytes
*
* #### Example
*
Expand All @@ -344,8 +355,8 @@ library Sapphire {
* @param alg The signing alg for which to generate a keypair.
* @param seed The seed to use for generating the key pair. You can use the
* `randomBytes` method if you don't already have a seed.
* @return publicKey The public half of the keypair.
* @return secretKey The secret half of the keypair.
* @return publicKey The public part of the keypair.
* @return secretKey The secret part of the keypair.
*/
function generateSigningKeyPair(SigningAlg alg, bytes memory seed)
internal
Expand Down Expand Up @@ -392,6 +403,8 @@ library Sapphire {
* bytes) as context, empty message.
* - `7` (`Secp256r1PrehashedSha256`): 9,000 gas, pre-existing hash (32
* bytes) as context, empty message.
* - `8` (`Secp384r1PrehashedSha384`): 43,200 gas, pre-existing hash (32
* bytes) as context, empty message.
*
* #### Example
*
Expand Down Expand Up @@ -450,6 +463,7 @@ library Sapphire {
* - `4` (`Secp256k1PrehashedKeccak256`): 3,000 gas
* - `5` (`Secp256k1PrehashedSha256`): 3,000 gas
* - `7` (`Secp256r1PrehashedSha256`): 7,900 gas
* - `8` (`Secp384r1PrehashedSha384`): 37,920 gas
*
* #### Example
*
Expand Down
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