1 // Copyright 2016 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef COMPONENTS_AUTOFILL_CORE_COMMON_SIGNATURES_UTIL_H_ 6 #define COMPONENTS_AUTOFILL_CORE_COMMON_SIGNATURES_UTIL_H_ 7 8 #include <stddef.h> 9 10 #include <stdint.h> 11 #include <string> 12 13 #include "base/strings/string16.h" 14 15 namespace autofill { 16 17 struct FormData; 18 struct FormFieldData; 19 20 using FormSignature = uint64_t; 21 using FieldSignature = uint32_t; 22 23 // Calculates form signature based on |form_data|. 24 FormSignature CalculateFormSignature(const FormData& form_data); 25 26 // Calculates field signature based on |field_name| and |field_type|. 27 FieldSignature CalculateFieldSignatureByNameAndType( 28 const base::string16& field_name, 29 const std::string& field_type); 30 31 // Calculates field signature based on |field_data|. This function is a proxy to 32 // |CalculateFieldSignatureByNameAndType|. 33 FieldSignature CalculateFieldSignatureForField(const FormFieldData& field_data); 34 35 // Returns 64-bit hash of the string. 36 uint64_t StrToHash64Bit(const std::string& str); 37 38 // Returns 32-bit hash of the string. 39 uint32_t StrToHash32Bit(const std::string& str); 40 41 // Reduce FieldSignature space (in UKM) to a small range for privacy reasons. 42 int64_t HashFormSignature(autofill::FormSignature form_signature); 43 44 // Reduce FieldSignature space (in UKM) to a small range for privacy reasons. 45 int64_t HashFieldSignature(autofill::FieldSignature field_signature); 46 } 47 48 #endif // COMPONENTS_AUTOFILL_CORE_COMMON_SIGNATURES_UTIL_H_ 49