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| 1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 // Original code is licensed as follows: | 6 // Original code is licensed as follows: |
| 7 /* | 7 /* |
| 8 * Copyright 2006-2007 Jeremias Maerki. | 8 * Copyright 2006-2007 Jeremias Maerki. |
| 9 * | 9 * |
| 10 * Licensed under the Apache License, Version 2.0 (the "License"); | 10 * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 83 FX_WCHAR CBC_Base256Encoder::randomize255State(FX_WCHAR ch, | 83 FX_WCHAR CBC_Base256Encoder::randomize255State(FX_WCHAR ch, |
| 84 int32_t codewordPosition) { | 84 int32_t codewordPosition) { |
| 85 int32_t pseudoRandom = ((149 * codewordPosition) % 255) + 1; | 85 int32_t pseudoRandom = ((149 * codewordPosition) % 255) + 1; |
| 86 int32_t tempVariable = ch + pseudoRandom; | 86 int32_t tempVariable = ch + pseudoRandom; |
| 87 if (tempVariable <= 255) { | 87 if (tempVariable <= 255) { |
| 88 return (FX_WCHAR)tempVariable; | 88 return (FX_WCHAR)tempVariable; |
| 89 } else { | 89 } else { |
| 90 return (FX_WCHAR)(tempVariable - 256); | 90 return (FX_WCHAR)(tempVariable - 256); |
| 91 } | 91 } |
| 92 } | 92 } |
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