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@ -33,7 +33,7 @@ namespace crypto
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"add $32, %%rcx \n"
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void ECBCryptoAESNI::SetKey (const uint8_t * key)
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void ECBCryptoAESNI::ExpandKey (const uint8_t * key)
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{
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__asm__
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(
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@ -68,11 +68,11 @@ namespace crypto
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"movups %%xmm1, (%%rcx) \n"
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: // output
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: "S" (key), "D" (m_KeySchedule) // input
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: "%rcx" // modified
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: "%rcx" // clogged
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);
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}
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void ECBCryptoAESNI::Encrypt (const ChipherBlock * in, ChipherBlock * out)
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void ECBEncryptionAESNI::Encrypt (const ChipherBlock * in, ChipherBlock * out)
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{
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__asm__
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(
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@ -92,11 +92,11 @@ namespace crypto
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"aesenc 208(%%rdx), %%xmm0 \n"
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"aesenclast 224(%%rdx), %%xmm0 \n"
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"movups %%xmm0, (%%rdi) \n"
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: : "d" ((uint64_t)m_KeySchedule), "S" (in), "D" (out)
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: : "d" (m_KeySchedule), "S" (in), "D" (out)
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);
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}
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}
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void ECBCryptoAESNI::Decrypt (const ChipherBlock * in, ChipherBlock * out)
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void ECBDecryptionAESNI::Decrypt (const ChipherBlock * in, ChipherBlock * out)
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{
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__asm__
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(
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@ -116,10 +116,38 @@ namespace crypto
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"aesdec 16(%%rdx), %%xmm0 \n"
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"aesdeclast (%%rdx), %%xmm0 \n"
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"movups %%xmm0, (%%rdi) \n"
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: : "d" ((uint64_t)m_KeySchedule), "S" (in), "D" (out)
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: : "d" (m_KeySchedule), "S" (in), "D" (out)
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);
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}
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#define CallAESIMC(offset) \
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"movups "#offset"(%%rdx), %%xmm0 \n" \
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"aesimc %%xmm0, %%xmm0 \n" \
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"movups %%xmm0, "#offset"(%%rdx) \n"
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void ECBDecryptionAESNI::SetKey (const uint8_t * key)
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{
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ExpandKey (key); // expand encryption key first
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// then invert it using aesimc
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__asm__
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(
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CallAESIMC(16)
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CallAESIMC(32)
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CallAESIMC(48)
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CallAESIMC(64)
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CallAESIMC(80)
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CallAESIMC(96)
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CallAESIMC(112)
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CallAESIMC(128)
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CallAESIMC(144)
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CallAESIMC(160)
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CallAESIMC(176)
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CallAESIMC(192)
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CallAESIMC(208)
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: : "d" (m_KeySchedule)
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);
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}
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#endif
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