reallyme-crypto 0.3.0

Cross-platform cryptographic primitives, key formats, and conformance-tested provider bindings.
Documentation 
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// SPDX-FileCopyrightText: Copyright © 2026 ReallyMe LLC. All rights reserved
//
// SPDX-License-Identifier: Apache-2.0

//! ML-DSA-44 root facade routed through the signature operation layer.

use crypto_core::{Algorithm, CryptoError, SignatureOperation};
use zeroize::Zeroizing;

use crate::signature_error::crypto_error_from_operation_error;

pub use crypto_ml_dsa_44::{
    decode_public_key, encode_public_key, ML_DSA_44_PUBLIC_KEY_LEN, ML_DSA_44_SECRET_SEED_LEN,
    ML_DSA_44_SIGNATURE_LEN,
};

/// Generate an ML-DSA-44 keypair through the signature operation owner.
pub fn generate_ml_dsa_44_keypair() -> Result<(Vec<u8>, Zeroizing<Vec<u8>>), CryptoError> {
    crate::operations::signature::generate_key_pair(Algorithm::MlDsa44)
        .map(|key_pair| (key_pair.public_key, key_pair.secret_key))
        .map_err(|error| {
            crypto_error_from_operation_error(SignatureOperation::KeyManagement, error)
        })
}

/// Reconstruct an ML-DSA-44 keypair from a 32-byte FIPS 204 seed.
pub fn generate_ml_dsa_44_keypair_from_seed(
    seed: &[u8; ML_DSA_44_SECRET_SEED_LEN],
) -> Result<(Vec<u8>, Zeroizing<Vec<u8>>), CryptoError> {
    crate::operations::signature::derive_key_pair(Algorithm::MlDsa44, seed)
        .map(|key_pair| (key_pair.public_key, key_pair.secret_key))
        .map_err(|error| {
            crypto_error_from_operation_error(SignatureOperation::KeyManagement, error)
        })
}

/// Sign `message` with an ML-DSA-44 seed.
pub fn sign_ml_dsa_44(secret_seed: &[u8], message: &[u8]) -> Result<Vec<u8>, CryptoError> {
    crate::operations::signature::sign(Algorithm::MlDsa44, secret_seed, message)
        .map_err(|error| crypto_error_from_operation_error(SignatureOperation::Sign, error))
}

/// Verify an ML-DSA-44 detached signature.
pub fn verify_ml_dsa_44(
    public_key: &[u8],
    message: &[u8],
    signature: &[u8],
) -> Result<(), CryptoError> {
    crate::operations::signature::verify(Algorithm::MlDsa44, public_key, message, signature)
        .map_err(|error| crypto_error_from_operation_error(SignatureOperation::Verify, error))
}