Commit 8db8db1c authored by Boris Mühmer's avatar Boris Mühmer
Browse files

added vendor directory

parent dd91cc4a

vendor/golang.org/x/crypto/AUTHORS

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# This source code refers to The Go Authors for copyright purposes.

# The master list of authors is in the main Go distribution,

# visible at https://tip.golang.org/AUTHORS.

vendor/golang.org/x/crypto/CONTRIBUTORS

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# This source code was written by the Go contributors.

# The master list of contributors is in the main Go distribution,

# visible at https://tip.golang.org/CONTRIBUTORS.

vendor/golang.org/x/crypto/LICENSE

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Copyright (c) 2009 The Go Authors. All rights reserved.



Redistribution and use in source and binary forms, with or without

modification, are permitted provided that the following conditions are

met:



   * Redistributions of source code must retain the above copyright

notice, this list of conditions and the following disclaimer.

   * Redistributions in binary form must reproduce the above

copyright notice, this list of conditions and the following disclaimer

in the documentation and/or other materials provided with the

distribution.

   * Neither the name of Google Inc. nor the names of its

contributors may be used to endorse or promote products derived from

this software without specific prior written permission.



THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/golang.org/x/crypto/PATENTS

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Additional IP Rights Grant (Patents)



"This implementation" means the copyrightable works distributed by

Google as part of the Go project.



Google hereby grants to You a perpetual, worldwide, non-exclusive,

no-charge, royalty-free, irrevocable (except as stated in this section)

patent license to make, have made, use, offer to sell, sell, import,

transfer and otherwise run, modify and propagate the contents of this

implementation of Go, where such license applies only to those patent

claims, both currently owned or controlled by Google and acquired in

the future, licensable by Google that are necessarily infringed by this

implementation of Go.  This grant does not include claims that would be

infringed only as a consequence of further modification of this

implementation.  If you or your agent or exclusive licensee institute or

order or agree to the institution of patent litigation against any

entity (including a cross-claim or counterclaim in a lawsuit) alleging

that this implementation of Go or any code incorporated within this

implementation of Go constitutes direct or contributory patent

infringement, or inducement of patent infringement, then any patent

rights granted to you under this License for this implementation of Go

shall terminate as of the date such litigation is filed.

vendor/golang.org/x/crypto/blowfish/block.go

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// Copyright 2010 The Go Authors. All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.



package blowfish



// getNextWord returns the next big-endian uint32 value from the byte slice

// at the given position in a circular manner, updating the position.

func getNextWord(b []byte, pos *int) uint32 {

	var w uint32

	j := *pos

	for i := 0; i < 4; i++ {

		w = w<<8 | uint32(b[j])

		j++

		if j >= len(b) {

			j = 0

		}

	}

	*pos = j

	return w

}



// ExpandKey performs a key expansion on the given *Cipher. Specifically, it

// performs the Blowfish algorithm's key schedule which sets up the *Cipher's

// pi and substitution tables for calls to Encrypt. This is used, primarily,

// by the bcrypt package to reuse the Blowfish key schedule during its

// set up. It's unlikely that you need to use this directly.

func ExpandKey(key []byte, c *Cipher) {

	j := 0

	for i := 0; i < 18; i++ {

		// Using inlined getNextWord for performance.

		var d uint32

		for k := 0; k < 4; k++ {

			d = d<<8 | uint32(key[j])

			j++

			if j >= len(key) {

				j = 0

			}

		}

		c.p[i] ^= d

	}



	var l, r uint32

	for i := 0; i < 18; i += 2 {

		l, r = encryptBlock(l, r, c)

		c.p[i], c.p[i+1] = l, r

	}



	for i := 0; i < 256; i += 2 {

		l, r = encryptBlock(l, r, c)

		c.s0[i], c.s0[i+1] = l, r

	}

	for i := 0; i < 256; i += 2 {

		l, r = encryptBlock(l, r, c)

		c.s1[i], c.s1[i+1] = l, r

	}

	for i := 0; i < 256; i += 2 {

		l, r = encryptBlock(l, r, c)

		c.s2[i], c.s2[i+1] = l, r

	}

	for i := 0; i < 256; i += 2 {

		l, r = encryptBlock(l, r, c)

		c.s3[i], c.s3[i+1] = l, r

	}

}



// This is similar to ExpandKey, but folds the salt during the key

// schedule. While ExpandKey is essentially expandKeyWithSalt with an all-zero

// salt passed in, reusing ExpandKey turns out to be a place of inefficiency

// and specializing it here is useful.

func expandKeyWithSalt(key []byte, salt []byte, c *Cipher) {

	j := 0

	for i := 0; i < 18; i++ {

		c.p[i] ^= getNextWord(key, &j)

	}



	j = 0

	var l, r uint32

	for i := 0; i < 18; i += 2 {

		l ^= getNextWord(salt, &j)

		r ^= getNextWord(salt, &j)

		l, r = encryptBlock(l, r, c)

		c.p[i], c.p[i+1] = l, r

	}



	for i := 0; i < 256; i += 2 {

		l ^= getNextWord(salt, &j)

		r ^= getNextWord(salt, &j)

		l, r = encryptBlock(l, r, c)

		c.s0[i], c.s0[i+1] = l, r

	}



	for i := 0; i < 256; i += 2 {

		l ^= getNextWord(salt, &j)

		r ^= getNextWord(salt, &j)

		l, r = encryptBlock(l, r, c)

		c.s1[i], c.s1[i+1] = l, r

	}



	for i := 0; i < 256; i += 2 {

		l ^= getNextWord(salt, &j)

		r ^= getNextWord(salt, &j)

		l, r = encryptBlock(l, r, c)

		c.s2[i], c.s2[i+1] = l, r

	}



	for i := 0; i < 256; i += 2 {

		l ^= getNextWord(salt, &j)

		r ^= getNextWord(salt, &j)

		l, r = encryptBlock(l, r, c)

		c.s3[i], c.s3[i+1] = l, r

	}

}



func encryptBlock(l, r uint32, c *Cipher) (uint32, uint32) {

	xl, xr := l, r

	xl ^= c.p[0]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[1]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[2]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[3]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[4]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[5]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[6]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[7]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[8]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[9]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[10]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[11]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[12]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[13]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[14]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[15]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[16]

	xr ^= c.p[17]

	return xr, xl

}



func decryptBlock(l, r uint32, c *Cipher) (uint32, uint32) {

	xl, xr := l, r

	xl ^= c.p[17]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[16]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[15]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[14]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[13]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[12]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[11]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[10]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[9]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[8]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[7]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[6]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[5]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[4]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[3]

	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[2]

	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[1]

	xr ^= c.p[0]

	return xr, xl

}