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[ruby/openssl] Add example to OpenSSL::KDF.hkdf method (https://github.com/ruby/openssl/pull/447)

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The values from RFC 5869
https://datatracker.ietf.org/doc/html/rfc5869#appendix-A.1

ec14a87f4f
This commit is contained in:
Yusuke Nakamura 2021-06-27 16:37:18 +09:00 • committed by Kazuki Yamaguchi
parent 70f0a802fe
commit 11651ab703
1 changed files with 8 additions and 0 deletions
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8
ext/openssl/ossl_kdf.c
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@ -163,6 +163,14 @@ kdf_scrypt(int argc, VALUE *argv, VALUE self)
* HashLen is the length of the hash function output in octets.
* _hash_::
* The hash function.
*
* === Example
* # The values from https://datatracker.ietf.org/doc/html/rfc5869#appendix-A.1
* ikm = ["0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"].pack("H*")
* salt = ["000102030405060708090a0b0c"].pack("H*")
* info = ["f0f1f2f3f4f5f6f7f8f9"].pack("H*")
* p OpenSSL::KDF.hkdf(ikm, salt: salt, info: info, length: 42, hash: "SHA256").unpack1("H*")
* # => "3cb25f25faacd57a90434f64d0362f2a2d2d0a90cf1a5a4c5db02d56ecc4c5bf34007208d5b887185865"
*/
static VALUE
kdf_hkdf(int argc, VALUE *argv, VALUE self)