Imported Upstream version 6.8.0.73

Former-commit-id: d18deab1b47cfd3ad8cba82b3f37d00eec2170af
This commit is contained in:
Xamarin Public Jenkins (auto-signing)
2019-12-10 18:00:56 +00:00
parent bceda29824
commit 73ee7591e8
1043 changed files with 16271 additions and 22080 deletions

View File

@ -44,6 +44,16 @@ namespace Mono.Security.Cryptography {
return (uint)((bytes [offset+3] << 24) | (bytes [offset+2] << 16) | (bytes [offset+1] << 8) | bytes [offset]);
}
static private byte [] GetBytesLE (int val)
{
return new byte [] {
(byte) (val & 0xff),
(byte) ((val >> 8) & 0xff),
(byte) ((val >> 16) & 0xff),
(byte) ((val >> 24) & 0xff)
};
}
static private byte[] Trim (byte[] array)
{
for (int i=0; i < array.Length; i++) {
@ -240,5 +250,41 @@ namespace Mono.Security.Cryptography {
}
throw new CryptographicException ("Unknown blob format.");
}
static public byte[] ToCapiPublicKeyBlob (RSA rsa)
{
RSAParameters p = rsa.ExportParameters (false);
int keyLength = p.Modulus.Length; // in bytes
byte[] blob = new byte [20 + keyLength];
blob [0] = 0x06; // Type - PUBLICKEYBLOB (0x06)
blob [1] = 0x02; // Version - Always CUR_BLOB_VERSION (0x02)
// [2], [3] // RESERVED - Always 0
blob [5] = 0x24; // ALGID - Always 00 24 00 00 (for CALG_RSA_SIGN)
blob [8] = 0x52; // Magic - RSA1 (ASCII in hex)
blob [9] = 0x53;
blob [10] = 0x41;
blob [11] = 0x31;
byte[] bitlen = GetBytesLE (keyLength << 3);
blob [12] = bitlen [0]; // bitlen
blob [13] = bitlen [1];
blob [14] = bitlen [2];
blob [15] = bitlen [3];
// public exponent (DWORD)
int pos = 16;
int n = p.Exponent.Length;
while (n > 0)
blob [pos++] = p.Exponent [--n];
// modulus
pos = 20;
byte[] part = p.Modulus;
int len = part.Length;
Array.Reverse (part, 0, len);
Buffer.BlockCopy (part, 0, blob, pos, len);
pos += len;
return blob;
}
}
}