From 39212987bdef8e16794e756e3c78b531be25b70a Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Fri, 2 Sep 2016 15:11:14 +0100 Subject: Create new constants for key lengths, etc We were using olm::KEY_LENGTH for everything under the sun which happened to be 32 bytes long, and making a bunch of assumptions in the process. Create a bunch of new constants (as C #defines rather than C++ consts so that I can use them in another forthcoming refactor). --- include/olm/crypto.h | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) (limited to 'include/olm/crypto.h') diff --git a/include/olm/crypto.h b/include/olm/crypto.h index 31b9b60..325080e 100644 --- a/include/olm/crypto.h +++ b/include/olm/crypto.h @@ -27,7 +27,36 @@ extern "C" { #endif -const size_t SHA256_OUTPUT_LENGTH = 32; +/** length of a sha256 hash */ +#define SHA256_OUTPUT_LENGTH 32 + +/** length of a public or private Curve25519 key */ +#define CURVE25519_KEY_LENGTH 32 + +/** length of the shared secret created by a Curve25519 ECDH operation */ +#define CURVE25519_SHARED_SECRET_LENGTH 32 + +/** amount of random data required to create a Curve25519 keypair */ +#define CURVE25519_RANDOM_LENGTH CURVE25519_KEY_LENGTH + +/** length of a public Ed25519 key */ +#define ED25519_PUBLIC_KEY_LENGTH 32 + +/** length of a private Ed25519 key */ +#define ED25519_PRIVATE_KEY_LENGTH 64 + +/** amount of random data required to create a Ed25519 keypair */ +#define ED25519_RANDOM_LENGTH 32 + +/** length of an Ed25519 signature */ +#define ED25519_SIGNATURE_LENGTH 64 + +/** length of an aes256 key */ +#define AES256_KEY_LENGTH 32 + +/** length of an aes256 initialisation vector */ +#define AES256_IV_LENGTH 16 + /** Computes SHA-256 of the input. The output buffer must be a least 32 * bytes long. */ -- cgit v1.2.3