AWS Cognito Password Regex - Specific to AWS Cognito [duplicate]

Question

Can someone give me the regex to match a valid AWS Cognito password - with numbers, special characters (their list), lower and upper case letters

The AWS Cognito default length limit is 6 characters and has it's own list of special characters

Note that the AWS Congito password regex is specific to AWS Congnito - not just a general password regex.

Answer 1

Updated Answer - September 2022

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/^(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*[\^$*.[\]{}()?"!@#%&/\\,><':;|_~`=+\- ])[A-Za-z0-9^$*.[\]{}()?"!@#%&/\\,><':;|_~`=+\- ]{8,256}$/

Explanation

• / Indicates the start of a regular expression.
• ^ Beginning. Matches the beginning of the string.
• (?=.*[a-z]) Requires lowercase letters.
• (?=.*[A-Z]) Requires uppercase letters.
• (?=.*[0-9]) Requires numbers.
• (?=.*[\^$*.[\]{}()?"!@#%&/\\,><':;|_~`=+\- ]) Requires at least one special character from the specified set. "The space character is treated as a special character." AWS Cognito
• [A-Za-z0-9^$*.[\]{}()?"!@#%&/\\,><':;|_~`=+\- ]{8,256} Minimum 8 characters from the allowed set, maximum 256 characters.
• $ End. Matches the end of the string.
• / Indicates the end of a regular expression.

The minimum character limit defaults to 8 but can be customised to a value between 6 and 99. The full length of a password however is limited to 256 characters (not 99).

Interactive Example

• regexr.com/6u92q (fork of an earlier example by @jonathan-irwin)

Answer 2

the Regex formula for Swift 5 is

"(.*[()!@^$*.?\\-@#%&\":;|><'_~`+=\\[\\],{}])"