mirror of
https://github.com/trezor/trezor-firmware.git
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3b88116bba
for now, we use sha256 and a little of ed25519 for CoSi purposes also add the Merkle root algorithm
37 lines
1.0 KiB
Rust
37 lines
1.0 KiB
Rust
use super::{ffi, Error};
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pub type Signature = ffi::ed25519_signature;
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pub const SIGNATURE_SIZE: usize = core::mem::size_of::<Signature>();
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pub type PublicKey = ffi::ed25519_public_key;
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pub const PUBLIC_KEY_SIZE: usize = core::mem::size_of::<PublicKey>();
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mod ffi_override {
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// bindgen incorrectly generates pk and RS as *mut instead of *const
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// https://github.com/rust-lang/rust-bindgen/pull/2684
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extern "C" {
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pub fn ed25519_sign_open(
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m: *const cty::c_uchar,
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mlen: usize,
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pk: *const cty::c_uchar,
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RS: *const cty::c_uchar,
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) -> cty::c_int;
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}
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}
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pub fn verify(message: &[u8], public_key: &PublicKey, signature: &Signature) -> Result<(), Error> {
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let res = unsafe {
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ffi_override::ed25519_sign_open(
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message.as_ptr(),
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message.len(),
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public_key.as_ptr(),
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signature.as_ptr(),
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)
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};
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if res == 0 {
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Ok(())
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} else {
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Err(Error::SignatureVerificationFailed)
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}
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}
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