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/**
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* IBAN is the international bank account number.
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* It has a country - specific format, that is checked here too
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*
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* Validation is case-insensitive. Please make sure to normalize input yourself.
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*/
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$.validator.addMethod( "iban", function( value, element ) {
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// Some quick simple tests to prevent needless work
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if ( this.optional( element ) ) {
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return true;
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}
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// Remove spaces and to upper case
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var iban = value.replace( / /g, "" ).toUpperCase(),
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ibancheckdigits = "",
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leadingZeroes = true,
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cRest = "",
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cOperator = "",
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countrycode, ibancheck, charAt, cChar, bbanpattern, bbancountrypatterns, ibanregexp, i, p;
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// Check for IBAN code length.
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// It contains:
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// country code ISO 3166-1 - two letters,
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// two check digits,
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// Basic Bank Account Number (BBAN) - up to 30 chars
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var minimalIBANlength = 5;
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if ( iban.length < minimalIBANlength ) {
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return false;
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}
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// Check the country code and find the country specific format
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countrycode = iban.substring( 0, 2 );
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bbancountrypatterns = {
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"AL": "\\d{8}[\\dA-Z]{16}",
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"AD": "\\d{8}[\\dA-Z]{12}",
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"AT": "\\d{16}",
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"AZ": "[\\dA-Z]{4}\\d{20}",
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"BE": "\\d{12}",
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"BH": "[A-Z]{4}[\\dA-Z]{14}",
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"BA": "\\d{16}",
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"BR": "\\d{23}[A-Z][\\dA-Z]",
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"BG": "[A-Z]{4}\\d{6}[\\dA-Z]{8}",
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"CR": "\\d{17}",
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"HR": "\\d{17}",
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"CY": "\\d{8}[\\dA-Z]{16}",
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"CZ": "\\d{20}",
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"DK": "\\d{14}",
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"DO": "[A-Z]{4}\\d{20}",
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"EE": "\\d{16}",
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"FO": "\\d{14}",
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"FI": "\\d{14}",
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"FR": "\\d{10}[\\dA-Z]{11}\\d{2}",
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"GE": "[\\dA-Z]{2}\\d{16}",
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"DE": "\\d{18}",
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"GI": "[A-Z]{4}[\\dA-Z]{15}",
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"GR": "\\d{7}[\\dA-Z]{16}",
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"GL": "\\d{14}",
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"GT": "[\\dA-Z]{4}[\\dA-Z]{20}",
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"HU": "\\d{24}",
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"IS": "\\d{22}",
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"IE": "[\\dA-Z]{4}\\d{14}",
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"IL": "\\d{19}",
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"IT": "[A-Z]\\d{10}[\\dA-Z]{12}",
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"KZ": "\\d{3}[\\dA-Z]{13}",
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"KW": "[A-Z]{4}[\\dA-Z]{22}",
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"LV": "[A-Z]{4}[\\dA-Z]{13}",
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"LB": "\\d{4}[\\dA-Z]{20}",
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"LI": "\\d{5}[\\dA-Z]{12}",
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"LT": "\\d{16}",
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"LU": "\\d{3}[\\dA-Z]{13}",
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"MK": "\\d{3}[\\dA-Z]{10}\\d{2}",
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"MT": "[A-Z]{4}\\d{5}[\\dA-Z]{18}",
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"MR": "\\d{23}",
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"MU": "[A-Z]{4}\\d{19}[A-Z]{3}",
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"MC": "\\d{10}[\\dA-Z]{11}\\d{2}",
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"MD": "[\\dA-Z]{2}\\d{18}",
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"ME": "\\d{18}",
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"NL": "[A-Z]{4}\\d{10}",
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"NO": "\\d{11}",
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"PK": "[\\dA-Z]{4}\\d{16}",
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"PS": "[\\dA-Z]{4}\\d{21}",
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"PL": "\\d{24}",
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"PT": "\\d{21}",
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"RO": "[A-Z]{4}[\\dA-Z]{16}",
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"SM": "[A-Z]\\d{10}[\\dA-Z]{12}",
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"SA": "\\d{2}[\\dA-Z]{18}",
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"RS": "\\d{18}",
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"SK": "\\d{20}",
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"SI": "\\d{15}",
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"ES": "\\d{20}",
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"SE": "\\d{20}",
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"CH": "\\d{5}[\\dA-Z]{12}",
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"TN": "\\d{20}",
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"TR": "\\d{5}[\\dA-Z]{17}",
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"AE": "\\d{3}\\d{16}",
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"GB": "[A-Z]{4}\\d{14}",
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"VG": "[\\dA-Z]{4}\\d{16}"
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};
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bbanpattern = bbancountrypatterns[ countrycode ];
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// As new countries will start using IBAN in the
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// future, we only check if the countrycode is known.
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// This prevents false negatives, while almost all
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// false positives introduced by this, will be caught
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// by the checksum validation below anyway.
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// Strict checking should return FALSE for unknown
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// countries.
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if ( typeof bbanpattern !== "undefined" ) {
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ibanregexp = new RegExp( "^[A-Z]{2}\\d{2}" + bbanpattern + "$", "" );
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if ( !( ibanregexp.test( iban ) ) ) {
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return false; // Invalid country specific format
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}
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}
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// Now check the checksum, first convert to digits
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ibancheck = iban.substring( 4, iban.length ) + iban.substring( 0, 4 );
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for ( i = 0; i < ibancheck.length; i++ ) {
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charAt = ibancheck.charAt( i );
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if ( charAt !== "0" ) {
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leadingZeroes = false;
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}
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if ( !leadingZeroes ) {
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ibancheckdigits += "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ".indexOf( charAt );
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}
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}
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// Calculate the result of: ibancheckdigits % 97
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for ( p = 0; p < ibancheckdigits.length; p++ ) {
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cChar = ibancheckdigits.charAt( p );
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cOperator = "" + cRest + "" + cChar;
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cRest = cOperator % 97;
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}
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return cRest === 1;
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}, "Please specify a valid IBAN" );
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