81 lines
3.0 KiB
Rust
81 lines
3.0 KiB
Rust
//! FROST Error types
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use thiserror::Error;
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/// An error related to FROST.
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#[non_exhaustive]
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#[derive(Error, Debug, Clone, Eq, PartialEq)]
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pub enum Error {
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/// min_signers is invalid
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#[error("min_signers must be at least 2 and not larger than max_signers")]
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InvalidMinSigners,
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/// max_signers is invalid
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#[error("max_signers must be at least 2")]
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InvalidMaxSigners,
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/// max_signers is invalid
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#[error("coefficients must have min_signers-1 elements")]
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InvalidCoefficients,
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/// This identifier is unserializable.
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#[error("Malformed identifier is unserializable.")]
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MalformedIdentifier,
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/// The encoding of a group scalar was malformed.
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#[error("Malformed scalar encoding.")]
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MalformedScalar,
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/// The encoding of a group element was malformed.
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#[error("Malformed group element encoding.")]
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MalformedElement,
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/// The encoding of a signing key was malformed.
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#[error("Malformed signing key encoding.")]
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MalformedSigningKey,
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/// The encoding of a verifying key was malformed.
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#[error("Malformed verifying key encoding.")]
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MalformedVerifyingKey,
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/// The encoding of a signature was malformed.
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#[error("Malformed signature encoding.")]
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MalformedSignature,
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/// Signature verification failed.
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#[error("Invalid signature.")]
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InvalidSignature,
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/// This scalar MUST NOT be zero.
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#[error("Invalid for this scalar to be zero.")]
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InvalidZeroScalar,
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/// This element MUST NOT be the identity.
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#[error("Invalid for this element to be the identity.")]
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InvalidIdentityElement,
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/// This element MUST have (large) prime order.
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#[error("Invalid for this element to not have large prime order.")]
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InvalidNonPrimeOrderElement,
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/// Duplicated shares provided
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#[error("Duplicated shares provided.")]
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DuplicatedShares,
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/// Commitment equals the identity
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#[error("Commitment equals the identity.")]
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IdentityCommitment,
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/// Signature share verification failed.
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#[error("Invalid signature share.")]
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InvalidSignatureShare {
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/// The identifier of the signer whose share validation failed,
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/// encoded as a byte vector with ciphersuite-dependent endianness
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/// (can be decoded with [`crate::frost::Identifier::deserialize`]).
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signer: Vec<u8>,
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},
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/// Secret share verification failed.
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#[error("Invalid secret share.")]
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InvalidSecretShare,
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/// Round 1 package not found for Round 2 participant.
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#[error("Round 1 package not found for Round 2 participant.")]
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PackageNotFound,
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/// Incorrect number of packages.
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#[error("Incorrect number of packages.")]
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IncorrectNumberOfPackages,
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/// The incorrect package was specified.
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#[error("The incorrect package was specified.")]
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IncorrectPackage,
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/// The ciphersuite does not support DKG.
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#[error("The ciphersuite does not support DKG.")]
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DKGNotSupported,
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/// The proof of knowledge is not valid.
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#[error("The proof of knowledge is not valid.")]
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InvalidProofOfKnowledge,
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}
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