diff --git a/crypto/src/security/PbeUtilities.cs b/crypto/src/security/PbeUtilities.cs
index 0cb235ae6..33f31e5b4 100644
--- a/crypto/src/security/PbeUtilities.cs
+++ b/crypto/src/security/PbeUtilities.cs
@@ -444,7 +444,7 @@ namespace Org.BouncyCastle.Security
}
}
}
- else if (mechanism.StartsWith("PBEwithSHA-1"))
+ else if (Platform.StartsWith(mechanism, "PBEwithSHA-1"))
{
PbeParametersGenerator generator = MakePbeGenerator(
(string) algorithmType[mechanism], new Sha1Digest(), keyBytes, salt, iterationCount);
@@ -494,7 +494,7 @@ namespace Org.BouncyCastle.Security
parameters = generator.GenerateDerivedParameters("RC2", 64, 64);
}
}
- else if (mechanism.StartsWith("PBEwithSHA-256"))
+ else if (Platform.StartsWith(mechanism, "PBEwithSHA-256"))
{
PbeParametersGenerator generator = MakePbeGenerator(
(string) algorithmType[mechanism], new Sha256Digest(), keyBytes, salt, iterationCount);
@@ -512,7 +512,7 @@ namespace Org.BouncyCastle.Security
parameters = generator.GenerateDerivedParameters("AES", 256, 128);
}
}
- else if (mechanism.StartsWith("PBEwithMD5"))
+ else if (Platform.StartsWith(mechanism, "PBEwithMD5"))
{
PbeParametersGenerator generator = MakePbeGenerator(
(string)algorithmType[mechanism], new MD5Digest(), keyBytes, salt, iterationCount);
@@ -538,7 +538,7 @@ namespace Org.BouncyCastle.Security
parameters = generator.GenerateDerivedParameters("AES", 256, 128);
}
}
- else if (mechanism.StartsWith("PBEwithMD2"))
+ else if (Platform.StartsWith(mechanism, "PBEwithMD2"))
{
PbeParametersGenerator generator = MakePbeGenerator(
(string)algorithmType[mechanism], new MD2Digest(), keyBytes, salt, iterationCount);
@@ -551,7 +551,7 @@ namespace Org.BouncyCastle.Security
parameters = generator.GenerateDerivedParameters("RC2", 64, 64);
}
}
- else if (mechanism.StartsWith("PBEwithHmac"))
+ else if (Platform.StartsWith(mechanism, "PBEwithHmac"))
{
string digestName = mechanism.Substring("PBEwithHmac".Length);
IDigest digest = DigestUtilities.GetDigest(digestName);
@@ -594,39 +594,39 @@ namespace Org.BouncyCastle.Security
{
string mechanism = (string)algorithms[Platform.ToUpperInvariant(algorithm)];
- if (mechanism.StartsWith("PBEwithHmac"))
+ if (Platform.StartsWith(mechanism, "PBEwithHmac"))
{
string digestName = mechanism.Substring("PBEwithHmac".Length);
return MacUtilities.GetMac("HMAC/" + digestName);
}
- if (mechanism.StartsWith("PBEwithMD2")
- || mechanism.StartsWith("PBEwithMD5")
- || mechanism.StartsWith("PBEwithSHA-1")
- || mechanism.StartsWith("PBEwithSHA-256"))
+ if (Platform.StartsWith(mechanism, "PBEwithMD2")
+ || Platform.StartsWith(mechanism, "PBEwithMD5")
+ || Platform.StartsWith(mechanism, "PBEwithSHA-1")
+ || Platform.StartsWith(mechanism, "PBEwithSHA-256"))
{
- if (mechanism.EndsWith("AES-CBC-BC") || mechanism.EndsWith("AES-CBC-OPENSSL"))
+ if (Platform.EndsWith(mechanism, "AES-CBC-BC") || Platform.EndsWith(mechanism, "AES-CBC-OPENSSL"))
{
return CipherUtilities.GetCipher("AES/CBC");
}
- if (mechanism.EndsWith("DES-CBC"))
+ if (Platform.EndsWith(mechanism, "DES-CBC"))
{
return CipherUtilities.GetCipher("DES/CBC");
}
- if (mechanism.EndsWith("DESEDE-CBC"))
+ if (Platform.EndsWith(mechanism, "DESEDE-CBC"))
{
return CipherUtilities.GetCipher("DESEDE/CBC");
}
- if (mechanism.EndsWith("RC2-CBC"))
+ if (Platform.EndsWith(mechanism, "RC2-CBC"))
{
return CipherUtilities.GetCipher("RC2/CBC");
}
- if (mechanism.EndsWith("RC4"))
+ if (Platform.EndsWith(mechanism, "RC4"))
{
return CipherUtilities.GetCipher("RC4");
}
@@ -643,7 +643,7 @@ namespace Org.BouncyCastle.Security
private static ICipherParameters FixDesParity(string mechanism, ICipherParameters parameters)
{
- if (!mechanism.EndsWith("DES-CBC") & !mechanism.EndsWith("DESEDE-CBC"))
+ if (!Platform.EndsWith(mechanism, "DES-CBC") && !Platform.EndsWith(mechanism, "DESEDE-CBC"))
{
return parameters;
}
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