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Merge pull request #24 from PandaTechAM/development
HMAC-SHA256 support added
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| using System.Security.Cryptography; | ||
| using System.Text; | ||
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| namespace Pandatech.Crypto; | ||
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| public static class Sha2 | ||
| { | ||
| public static byte[] ComputeHmacSha256(byte[] key, params string[] messages) | ||
| { | ||
| using var hmac = new HMACSHA256(key); | ||
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| var concatenatedMessage = Encoding.UTF8.GetBytes(string.Concat(messages)); | ||
| return hmac.ComputeHash(concatenatedMessage); | ||
| } | ||
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| public static string GetHmacSha256Hex(byte[] key, params string[] messages) | ||
| { | ||
| var hash = ComputeHmacSha256(key, messages); | ||
| return BitConverter.ToString(hash).Replace("-", "").ToLower(); | ||
| } | ||
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| public static string GetHmacSha256Base64(byte[] key, params string[] messages) | ||
| { | ||
| var hash = ComputeHmacSha256(key, messages); | ||
| return Convert.ToBase64String(hash); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| namespace Pandatech.Crypto.Tests; | ||
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| public class Sha2Tests | ||
| { | ||
| [Fact] | ||
| public void HmacSha256_ValidInput_ReturnsExpectedHash() | ||
| { | ||
| // Arrange | ||
| var key = "secret"u8.ToArray(); | ||
| var messages = new[] { "Hello", "World" }; | ||
| const string expectedHashHex = "2e91612bb72b29d82f32789d063de62d5897a4ee5d3b5d34459801b94397b099"; | ||
|
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| // Act | ||
| var hashHex = Sha2.GetHmacSha256Hex(key, messages); | ||
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| // Assert | ||
| Assert.Equal(expectedHashHex, hashHex); | ||
| } | ||
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| [Fact] | ||
| public void HmacSha256_EmptyMessage_ReturnsHash() | ||
| { | ||
| // Arrange | ||
| var key = "secret"u8.ToArray(); | ||
| var messages = Array.Empty<string>(); | ||
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| // Act | ||
| var hash = Sha2.ComputeHmacSha256(key, messages); | ||
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| // Assert | ||
| Assert.NotNull(hash); | ||
| Assert.NotEmpty(hash); | ||
| } | ||
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| [Fact] | ||
| public void HmacSha256_ConsistentOutput_ForSameInputs() | ||
| { | ||
| // Arrange | ||
| var key = "secret"u8.ToArray(); | ||
| var messages = new[] { "Test", "Message" }; | ||
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| // Act | ||
| var hash1 = Sha2.GetHmacSha256Hex(key, messages); | ||
| var hash2 = Sha2.GetHmacSha256Hex(key, messages); | ||
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| // Assert | ||
| Assert.Equal(hash1, hash2); | ||
| } | ||
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| [Fact] | ||
| public void HmacSha256Base64_ValidInput_ReturnsExpectedBase64() | ||
| { | ||
| // Arrange | ||
| var key = "secret"u8.ToArray(); | ||
| var messages = new[] { "Hello", "World" }; | ||
| const string expectedBase64 = "LpFhK7crKdgvMnidBj3mLViXpO5dO100RZgBuUOXsJk="; | ||
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| // Act | ||
| var base64Hash = Sha2.GetHmacSha256Base64(key, messages); | ||
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| // Assert | ||
| Assert.Equal(expectedBase64, base64Hash); | ||
| } | ||
| } |