skidfire
27 lines
916 B
C#
27 lines
916 B
C#
using System.Security.Cryptography;
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using System.Text;
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using Vanadium.Classes;
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namespace Vanadium.Utils
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{
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public static class ImageSignatureValidation
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{
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public static string GenerateCacheKey(string path, int? w, int? h, bool crop)
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{
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string rawKey = $"{path}_{w}_{h}_{crop}";
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byte[] hashBytes = SHA256.HashData(Encoding.UTF8.GetBytes(rawKey));
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return Convert.ToHexString(hashBytes);
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}
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public static string SignPayload(byte[] payload, string sig)
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{
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using var rsa = RSA.Create();
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rsa.ImportParameters(ServerConfig.RsaParams);
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byte[] signatureBytes = rsa.SignData(payload, HashAlgorithmName.SHA1, RSASignaturePadding.Pkcs1);
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string base64Signature = Convert.ToBase64String(signatureBytes);
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return $"key-id=KEY:RSA:{sig}.rec.net; data={base64Signature};";
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}
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}
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} |