Struct sequoia_openpgp::crypto::mpi::ProtectedMPI [−][src]
pub struct ProtectedMPI { /* fields omitted */ }
Expand description
Holds a single MPI containing secrets.
The memory will be cleared when the object is dropped. Used by
SecretKeyMaterial
to protect secret keys.
Implementations
Creates new MPI encoding an uncompressed EC point.
Encodes the given point on a elliptic curve (see Section 6 of
RFC 6637 for details). This is used to encode public keys
and ciphertexts for the NIST curves (NistP256
, NistP384
,
and NistP521
).
Creates new MPI encoding a compressed EC point using native encoding.
Encodes the given point on a elliptic curve (see Section 13.2
of RFC4880bis for details). This is used to encode public
keys and ciphertexts for the Bernstein curves (currently
X25519
).
Returns the length of the MPI in bits.
Leading zero-bits are not included in the returned size.
Returns the value of this MPI.
Note that due to stripping of zero-bytes, the returned value may be shorter than expected.
Returns the value of this MPI zero-padded to the given length.
MPI-encoding strips leading zero-bytes. This function adds
them back. This operation is done unconditionally to avoid
timing differences. If the size exceeds to
, the result is
silently truncated to avoid timing differences.
Decodes an EC point encoded as MPI.
Decodes the MPI into a point on an elliptic curve (see
Section 6 of RFC 6637 and Section 13.2 of RFC4880bis for
details). If the point is not compressed, the function
returns (x, y)
. If it is compressed, y
will be empty.
Errors
Returns Error::UnsupportedEllipticCurve
if the curve is not
supported, Error::MalformedMPI
if the point is formatted
incorrectly, Error::InvalidOperation
if the given curve is
operating on native octet strings.
Trait Implementations
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
Auto Trait Implementations
impl RefUnwindSafe for ProtectedMPI
impl Send for ProtectedMPI
impl Sync for ProtectedMPI
impl Unpin for ProtectedMPI
impl UnwindSafe for ProtectedMPI
Blanket Implementations
Mutably borrows from an owned value. Read more