57 lines
2.4 KiB
Go
57 lines
2.4 KiB
Go
// Copyright (c) 2020 The Decred developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package secp256k1
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// ErrorKind identifies a kind of error. It has full support for errors.Is and
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// errors.As, so the caller can directly check against an error kind when
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// determining the reason for an error.
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type ErrorKind string
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// These constants are used to identify a specific RuleError.
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const (
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// ErrPubKeyInvalidLen indicates that the length of a serialized public
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// key is not one of the allowed lengths.
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ErrPubKeyInvalidLen = ErrorKind("ErrPubKeyInvalidLen")
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// ErrPubKeyInvalidFormat indicates an attempt was made to parse a public
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// key that does not specify one of the supported formats.
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ErrPubKeyInvalidFormat = ErrorKind("ErrPubKeyInvalidFormat")
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// ErrPubKeyXTooBig indicates that the x coordinate for a public key
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// is greater than or equal to the prime of the field underlying the group.
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ErrPubKeyXTooBig = ErrorKind("ErrPubKeyXTooBig")
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// ErrPubKeyYTooBig indicates that the y coordinate for a public key is
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// greater than or equal to the prime of the field underlying the group.
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ErrPubKeyYTooBig = ErrorKind("ErrPubKeyYTooBig")
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// ErrPubKeyNotOnCurve indicates that a public key is not a point on the
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// secp256k1 curve.
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ErrPubKeyNotOnCurve = ErrorKind("ErrPubKeyNotOnCurve")
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// ErrPubKeyMismatchedOddness indicates that a hybrid public key specified
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// an oddness of the y coordinate that does not match the actual oddness of
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// the provided y coordinate.
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ErrPubKeyMismatchedOddness = ErrorKind("ErrPubKeyMismatchedOddness")
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)
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// Error satisfies the error interface and prints human-readable errors.
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func (err ErrorKind) Error() string { return string(err) }
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// Error identifies an error related to public key cryptography using a
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// sec256k1 curve. It has full support for errors.Is and errors.As, so the
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// caller can ascertain the specific reason for the error by checking
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// the underlying error.
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type Error struct {
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Err error
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Description string
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}
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// Error satisfies the error interface and prints human-readable errors.
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func (err Error) Error() string { return err.Description }
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// Unwrap returns the underlying wrapped error.
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func (err Error) Unwrap() (ee error) { return err.Err }
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// makeError creates an Error given a set of arguments.
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func makeError(kind ErrorKind, desc string) (err error) {
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return Error{Err: kind, Description: desc}
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}
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