When I run the following command:

% openssl ecparam -list_curves

It lists
...
  secp192k1 : SECG curve over a 192 bit prime field
  secp224k1 : SECG curve over a 224 bit prime field
  secp224r1 : NIST/SECG curve over a 224 bit prime field
  secp256k1 : SECG curve over a 256 bit prime field
  secp384r1 : NIST/SECG curve over a 384 bit prime field
secp521r1 : NIST/SECG curve over a 521 bit prime field
...

"secp256k1" is supported but not "secp256r1".  The later is  standardized
and  required by Suite B. Is it not supported in openssl-1.0.1? Why "secp256k1"
instead of "secp256r1"?

Thanks,
-binlu


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