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Checkdigit\n\n[![Star on GitHub](https://img.shields.io/github/stars/tiagohm/checkdigit.svg?style=flat\u0026logo=github\u0026colorB=deeppink\u0026label=stars)](https://github.com/tiagohm/checkdigit)\n[![License: MIT](https://img.shields.io/badge/license-MIT-purple.svg)](https://opensource.org/licenses/MIT)\n\nA set of check digit algorithms used for error detection on identification numbers.\n\n## Installation\n\nIn `pubspec.yaml` add the following dependency:\n\n```yaml\ndependencies:\n  checkdigit: ^0.3.1\n```\n\n## Algorithms\n\n### [Luhn](https://en.wikipedia.org/wiki/Luhn_algorithm)\n\n```dart\nbool isValid = luhn.validate('79927398713');\nint checkDigit = luhn.checkDigit('7992739871');\nString checkDigitAsString = luhn.checkDigitAsString('7992739871');\n```\n\n### [Verhoeff](https://en.wikipedia.org/wiki/Verhoeff_algorithm)\n\n```dart\nbool isValid = verhoeff.validate('2363');\nint checkDigit = verhoeff.checkDigit('236');\nString checkDigitAsString = verhoeff.checkDigitAsString('236');\n```\n\n### [Damm](https://en.wikipedia.org/wiki/Damm_algorithm)\n\n```dart\nbool isValid = damm.validate('5724');\nint checkDigit = damm.checkDigit('572');\nString checkDigitAsString = damm.checkDigitAsString('572');\n```\n\n### [ISBN](https://en.wikipedia.org/wiki/International_Standard_Book_Number#Check_digits)\n\n```dart\n// ISBN-10.\nbool isValid = isbn10.validate('080442957X');\nint checkDigit = isbn10.checkDigit('080442957');\nString checkDigitAsString = isbn10.checkDigitAsString('080442957');\n// ISBN-13.\nbool isValid = isbn13.validate('9783161484100');\nint checkDigit = isbn13.checkDigit('978316148410');\nString checkDigitAsString = isbn13.checkDigitAsString('978316148410');\n```\n\n### [ISIN](https://www.isin.org/education/)\n\n```dart\nbool isValid = isin.validate('US0378331005');\nint checkDigit = isin.checkDigit('US037833100');\nString checkDigitAsString = isin.checkDigitAsString('US037833100');\n```\n\n### [CPF](https://pt.wikipedia.org/wiki/Cadastro_de_pessoas_f%C3%ADsicas)\n\n```dart\nbool isValid = cpf.validate('11144477735');\nint checkDigit = cpf.checkDigit('111444777');\nString checkDigitAsString = cpf.checkDigitAsString('111444777');\n```\n\n### [IBAN](https://en.wikipedia.org/wiki/International_Bank_Account_Number)\n\n```dart\nbool isValid = iban.validate('GB82WEST12345698765432');\nint checkDigit = iban.checkDigit('GB00WEST12345698765432');\nString checkDigitAsString = iban.checkDigitAsString('GB00WEST12345698765432');\n```\n\n### [CNPJ](https://pt.wikipedia.org/wiki/Cadastro_Nacional_da_Pessoa_Jur%C3%ADdica)\n\n```dart\nbool isValid = cnpj.validate('11222333000181');\nint checkDigit = cnpj.checkDigit('112223330001');\nString checkDigitAsString = cnpj.checkDigitAsString('112223330001');\n```\n\n### [EAN-X](https://en.wikipedia.org/wiki/International_Article_Number)\n\n```dart\n// EAN-13.\nbool isValid = ean13.validate('4006381333931');\nint checkDigit = ean13.checkDigit('400638133393');\nString checkDigitAsString = ean13.checkDigitAsString('400638133393');\n// UPC-A.\nbool isValid = upcA.validate('036000291452');\nint checkDigit = upcA.checkDigit('03600029145');\nString checkDigitAsString = upcA.checkDigitAsString('03600029145');\n// EAN-8.\nbool isValid = ean8.validate('73513537');\nint checkDigit = ean8.checkDigit('7351353');\nString checkDigitAsString = ean8.checkDigitAsString('7351353');\n```","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ftiagohm%2Fcheckdigit","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Ftiagohm%2Fcheckdigit","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ftiagohm%2Fcheckdigit/lists"}