Struct Mod97Validator 

pub struct Mod97Validator;

MOD-97 algorithm validator for IBANs and similar identifiers.

The MOD-97 algorithm is used to validate International Bank Account Numbers (IBANs) and other financial identifiers.

Algorithm Steps

1. Move the first 4 characters to the end
2. Replace letters with numbers (A=10, B=11, …, Z=35)
3. Calculate the remainder of the number modulo 97
4. The remainder should be 1 for valid IBANs

Implementations

impl Mod97Validator

pub fn validate(value: &str) -> bool

Validate a string using the MOD-97 algorithm.

Arguments

• value - The string to validate (typically an IBAN or similar identifier)

Returns

true if the value passes MOD-97 validation, false otherwise

Example

use fraiseql_core::validation::checksum::Mod97Validator;

assert!(Mod97Validator::validate("GB82WEST12345698765432")); // Valid IBAN
assert!(!Mod97Validator::validate("GB82WEST12345698765433")); // Invalid

pub fn error_message() -> &'static str

Get a human-readable description of why validation failed.