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Orson Peters 2013-01-22 11:51:53 +01:00
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@ -7,8 +7,21 @@ on the SUPERCOP "ref10" implementation. All code is in the public domain.
All code is pure ANSI C without any dependencies, except for the random seed All code is pure ANSI C without any dependencies, except for the random seed
generation which uses standard OS cryptography APIs. If you wish to be generation which uses standard OS cryptography APIs. If you wish to be
entirely portable define `ED25519_NO_SEED`. This does disable the entirely portable define `ED25519_NO_SEED`. This does disable the
`ed25519_create_seed` function however (you can use your own seeding function `ed25519_create_seed` function however you can use your own seeding function
if you wish.) if you wish.
Performance
-----------
On a machine with an Intel Q6600 @ 2.4GHz I got the following speeds (running on only one thread):
Key generation: ~280us
Message signing: ~280us
Message verifying: ~840us
The speeds on other machines may vary.
Usage Usage
----- -----
@ -43,9 +56,8 @@ void ed25519_create_keypair(unsigned char *verify_key, unsigned char *sign_key,
``` ```
Creates a new key pair from the given seed. `verify_key` must be a writable 32 Creates a new key pair from the given seed. `verify_key` must be a writable 32
byte buffer, `sign_key` must be a writable 64 byte buffer and `seed` must be a byte buffer, `sign_key` must be a writable 64 byte buffer and `seed` must be a 32 byte buffer.
32 byte buffer.
```c ```c
void ed25519_sign(unsigned char *signature, void ed25519_sign(unsigned char *signature,
const unsigned char *message, size_t message_len, const unsigned char *message, size_t message_len,