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Introduce API to parse PEM keys in a simpler way #1305

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27 changes: 27 additions & 0 deletions ecdsa/src/signing.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -124,6 +124,33 @@ where
}
}

#[cfg(feature = "pem")]
impl<C> SigningKey<C>
where
C: EcdsaCurve + AssociatedOid + CurveArithmetic,
AffinePoint<C>: FromSec1Point<C> + ToSec1Point<C>,
FieldBytesSize<C>: sec1::ModulusSize,
Scalar<C>: Invert<Output = CtOption<Scalar<C>>>,
SignatureSize<C>: ArraySize,
{
#[inline]
/// Parse [`SigningKey`] from PEM-encoded private key.
///
/// Supported formats:
/// - `SEC1` - requires feature `sec1`
/// - `PKCS#8` - requires feature `pkcs8`
///
/// # Errors
/// - If `pem` is not valid PEM encoded private key
/// - If label within `pem` is not known valid label
/// - If label is valid, but unable to decode DER content of the PEM file
pub fn from_pem(
pem: &str,
) -> ::core::result::Result<Self, impl core::error::Error + Send + Sync + 'static> {
SecretKey::<C>::from_pem(pem).map(Into::into)
}
}

impl<C> Generate for SigningKey<C>
where
C: EcdsaCurve + CurveArithmetic,
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