github.com/decred/dcrd/dcrec/secp256k1/v2
Package secp256k1 implements support for the elliptic curves needed for Decred. Decred uses elliptic curve cryptography using koblitz curves (specifically secp256k1) for cryptographic functions. See https://www.secg.org/sec2-v2.pdf for details on the standard. This package provides the data structures and functions implementing the crypto/elliptic Curve interface in order to permit using these curves with the standard crypto/ecdsa package provided with go. Helper functionality is provided to parse signatures and public keys from standard formats. It was designed for use with dcrd, but should be general enough for other uses of elliptic curve crypto. It was originally based on some initial work by ThePiachu, but has significantly diverged since then. This example demonstrates decrypting a message using a private key that is first parsed from raw bytes. This example demonstrates encrypting a message for a public key that is first parsed from raw bytes, then decrypting it using the corresponding private key. This example demonstrates signing a message with a secp256k1 private key that is first parsed form raw bytes and serializing the generated signature. This example demonstrates verifying a secp256k1 signature against a public key that is first parsed from raw bytes. The signature is also parsed from raw bytes.
Readme
Package dcrec implements elliptic curve cryptography needed for working with Decred (secp256k1 only for now). It is designed so that it may be used with the standard crypto/ecdsa packages provided with go. A comprehensive suite of test is provided to ensure proper functionality. Package dcrec was originally based on work from ThePiachu which is licensed under the same terms as Go, but it has signficantly diverged since then. The Decred developers original is licensed under the liberal ISC license.
Although this package was primarily written for dcrd, it has intentionally been designed so it can be used as a standalone package for any projects needing to use secp256k1 elliptic curve cryptography.
$ go get -u github.com/decred/dcrd/dcrec
Sign Message Demonstrates signing a message with a secp256k1 private key that is first parsed form raw bytes and serializing the generated signature.
Verify Signature Demonstrates verifying a secp256k1 signature against a public key that is first parsed from raw bytes. The signature is also parsed from raw bytes.
Encryption Demonstrates encrypting a message for a public key that is first parsed from raw bytes, then decrypting it using the corresponding private key.
Decryption Demonstrates decrypting a message using a private key that is first parsed from raw bytes.
Package dcrec is licensed under the copyfree ISC License except for dcrec.go and dcrec_test.go which is under the same license as Go.
FAQs
Package secp256k1 implements support for the elliptic curves needed for Decred. Decred uses elliptic curve cryptography using koblitz curves (specifically secp256k1) for cryptographic functions. See https://www.secg.org/sec2-v2.pdf for details on the standard. This package provides the data structures and functions implementing the crypto/elliptic Curve interface in order to permit using these curves with the standard crypto/ecdsa package provided with go. Helper functionality is provided to parse signatures and public keys from standard formats. It was designed for use with dcrd, but should be general enough for other uses of elliptic curve crypto. It was originally based on some initial work by ThePiachu, but has significantly diverged since then. This example demonstrates decrypting a message using a private key that is first parsed from raw bytes. This example demonstrates encrypting a message for a public key that is first parsed from raw bytes, then decrypting it using the corresponding private key. This example demonstrates signing a message with a secp256k1 private key that is first parsed form raw bytes and serializing the generated signature. This example demonstrates verifying a secp256k1 signature against a public key that is first parsed from raw bytes. The signature is also parsed from raw bytes.
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