Struct RawSigner 

pub struct RawSigner { /* private fields */ }

Raw (no-digest) signing context wrapping EVP_PKEY_CTX after EVP_PKEY_sign_init.

Use this for algorithms where the caller has already hashed the data, such as raw ECDSA (data is the hash) or raw RSA with explicit padding. For algorithms that hash internally, use Signer or MessageSigner.

The context is reusable: after a successful sign call the init state is preserved, so the same padding parameters apply to further sign calls with the same key.

Implementations

impl RawSigner

pub fn new( key: &Pkey<Private>, libctx: Option<&Arc<LibCtx>>, ) -> Result<Self, ErrorStack>

Create and initialise a sign context (EVP_PKEY_CTX_new_from_pkey + EVP_PKEY_sign_init).

Pass libctx = Some(ctx) to restrict provider lookup to that library context; None uses the key’s own library context.

Errors

pub fn set_params(&mut self, params: &Params<'_>) -> Result<(), ErrorStack>

Apply parameters after init (e.g. RSA padding mode, salt length).

Errors

pub fn sign_len(&mut self, tbs_len: usize) -> Result<usize, ErrorStack>

Query the signature output size for the given input length.

Calls EVP_PKEY_sign with a null output pointer — does not consume the signing state.

Errors

pub fn sign(&mut self, tbs: &[u8], sig: &mut [u8]) -> Result<usize, ErrorStack>

Sign pre-hashed data into sig. Returns the number of bytes written.

sig.len() must be >= sign_len(tbs.len()).

Errors

pub fn sign_alloc(&mut self, tbs: &[u8]) -> Result<Vec<u8>, ErrorStack>

Sign pre-hashed data, allocating the output buffer.

Convenience wrapper around sign_len + sign.

Errors

Trait Implementations

impl Drop for RawSigner

fn drop(&mut self)

Executes the destructor for this type.

impl Send for RawSigner