private unsafe EVP_PKEY CreateParams()
{
const EVP_PKEY_Ctrl_OP op = EVP_PKEY_Ctrl_OP.EVP_PKEY_OP_PARAMGEN | EVP_PKEY_Ctrl_OP.EVP_PKEY_OP_KEYGEN;
var ctx = EVP_PKEY_CTX_new_id(EVP_PKEY_type.EVP_PKEY_EC, IntPtr.Zero);
try
{
ThrowOnError(EVP_PKEY_paramgen_init(ctx));
ThrowOnError(EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_type.EVP_PKEY_EC, op, EVP_PKEY_Ctrl_Command.EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, _curveNid, null));
EVP_PKEY key;
ThrowOnError(EVP_PKEY_paramgen(ctx, out key));
return(key);
}
finally
{
ctx.Free();
}
}
public static void EVP_PKEY_paramgen_ECCurve(int curveNid, out EVP_PKEY curveParameters)
{
const EVP_PKEY_Ctrl_OP op = EVP_PKEY_Ctrl_OP.EVP_PKEY_OP_PARAMGEN | EVP_PKEY_Ctrl_OP.EVP_PKEY_OP_KEYGEN;
const EVP_PKEY_Ctrl_Command cmd = EVP_PKEY_Ctrl_Command.EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID;
var ctx = EVP_PKEY_CTX_new_id(EVP_PKEY_type.EVP_PKEY_EC, IntPtr.Zero);
try
{
var result = EVP_PKEY_paramgen_init(ctx);
ThrowOnErrorReturnCode(result);
result = EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_type.EVP_PKEY_EC, op, cmd, curveNid, IntPtr.Zero);
ThrowOnErrorReturnCode(result);
result = EVP_PKEY_paramgen(ctx, out curveParameters);
}
finally
{
ctx.Free();
}
}
private static extern int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX ctx, EVP_PKEY_type keyType, EVP_PKEY_Ctrl_OP optype, EVP_PKEY_Ctrl_Command cmd, int p1, IntPtr p2);
internal static extern unsafe int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX ctx, EVP_PKEY_type keyType, EVP_PKEY_Ctrl_OP optype, EVP_PKEY_Ctrl_Command cmd, int p1, void *p2);
