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Use OpenSSL 3's HKDF if it is available
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39 changes: 39 additions & 0 deletions
39
src/libraries/System.Security.Cryptography/src/System/Security/Cryptography/HKDF.Managed.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
|
|
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| namespace System.Security.Cryptography | ||
| { | ||
| public static partial class HKDF | ||
| { | ||
| private static void Extract( | ||
| HashAlgorithmName hashAlgorithmName, | ||
| int hashLength, | ||
| ReadOnlySpan<byte> ikm, | ||
| ReadOnlySpan<byte> salt, | ||
| Span<byte> prk) | ||
| { | ||
| HKDFManagedImplementation.Extract(hashAlgorithmName, hashLength, ikm, salt, prk); | ||
| } | ||
|
|
||
| private static void Expand( | ||
| HashAlgorithmName hashAlgorithmName, | ||
| int hashLength, | ||
| ReadOnlySpan<byte> prk, | ||
| Span<byte> output, | ||
| ReadOnlySpan<byte> info) | ||
| { | ||
| HKDFManagedImplementation.Expand(hashAlgorithmName, hashLength, prk, output, info); | ||
| } | ||
|
|
||
| private static void DeriveKeyCore( | ||
| HashAlgorithmName hashAlgorithmName, | ||
| int hashLength, | ||
| ReadOnlySpan<byte> ikm, | ||
| Span<byte> output, | ||
| ReadOnlySpan<byte> salt, | ||
| ReadOnlySpan<byte> info) | ||
| { | ||
| HKDFManagedImplementation.DeriveKey(hashAlgorithmName, hashLength, ikm, output, salt, info); | ||
| } | ||
| } | ||
| } |
79 changes: 79 additions & 0 deletions
79
src/libraries/System.Security.Cryptography/src/System/Security/Cryptography/HKDF.OpenSsl.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
|
|
||
| using System.Diagnostics; | ||
|
|
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| namespace System.Security.Cryptography | ||
| { | ||
| public static partial class HKDF | ||
| { | ||
| private static readonly bool s_hasOpenSslImplementation = Interop.Crypto.EvpKdfAlgs.Hkdf is not null; | ||
|
|
||
| private static void Extract( | ||
| HashAlgorithmName hashAlgorithmName, | ||
| int hashLength, | ||
| ReadOnlySpan<byte> ikm, | ||
| ReadOnlySpan<byte> salt, | ||
| Span<byte> prk) | ||
| { | ||
| if (s_hasOpenSslImplementation) | ||
| { | ||
| Debug.Assert(Interop.Crypto.EvpKdfAlgs.Hkdf is not null); | ||
| Debug.Assert(hashAlgorithmName.Name is not null); | ||
|
|
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| Interop.Crypto.HkdfExtract(Interop.Crypto.EvpKdfAlgs.Hkdf, ikm, hashAlgorithmName.Name, salt, prk); | ||
| } | ||
| else | ||
| { | ||
| HKDFManagedImplementation.Extract(hashAlgorithmName, hashLength, ikm, salt, prk); | ||
| } | ||
| } | ||
|
|
||
| private static void Expand( | ||
| HashAlgorithmName hashAlgorithmName, | ||
| int hashLength, | ||
| ReadOnlySpan<byte> prk, | ||
| Span<byte> output, | ||
| ReadOnlySpan<byte> info) | ||
| { | ||
| if (s_hasOpenSslImplementation) | ||
| { | ||
| Debug.Assert(Interop.Crypto.EvpKdfAlgs.Hkdf is not null); | ||
| Debug.Assert(hashAlgorithmName.Name is not null); | ||
|
|
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| Interop.Crypto.HkdfExpand(Interop.Crypto.EvpKdfAlgs.Hkdf, prk, hashAlgorithmName.Name, info, output); | ||
| } | ||
| else | ||
| { | ||
| HKDFManagedImplementation.Expand(hashAlgorithmName, hashLength, prk, output, info); | ||
| } | ||
| } | ||
|
|
||
| private static void DeriveKeyCore( | ||
| HashAlgorithmName hashAlgorithmName, | ||
| int hashLength, | ||
| ReadOnlySpan<byte> ikm, | ||
| Span<byte> output, | ||
| ReadOnlySpan<byte> salt, | ||
| ReadOnlySpan<byte> info) | ||
| { | ||
| if (s_hasOpenSslImplementation) | ||
| { | ||
| Debug.Assert(Interop.Crypto.EvpKdfAlgs.Hkdf is not null); | ||
| Debug.Assert(hashAlgorithmName.Name is not null); | ||
|
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| Interop.Crypto.HkdfDeriveKey( | ||
| Interop.Crypto.EvpKdfAlgs.Hkdf, | ||
| ikm, | ||
| hashAlgorithmName.Name, | ||
| salt, | ||
| info, | ||
| output); | ||
| } | ||
| else | ||
| { | ||
| HKDFManagedImplementation.DeriveKey(hashAlgorithmName, hashLength, ikm, output, salt, info); | ||
| } | ||
| } | ||
| } | ||
| } |
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