SAP provides standard Utility class CL_HTTP_UTILITY which provides methods that can be used to encode and decode string for security reasons.
PARAMETERS : p_string TYPE string.
DATA : lv_encode_str TYPE string,
lv_decode_str TYPE string.
WRITE :/ ‘Plain String :’, p_string.
CALL METHOD cl_http_utility=>if_http_utility~encode_base64 EXPORTING unencoded = p_string ” Unencoded String RECEIVING encoded = lv_encode_str. ” BASE64-Encoded String
WRITE :/ ‘Encoded String:’, lv_encode_str COLOR 5.
CALL METHOD cl_http_utility=>if_http_utility~decode_base64 EXPORTING encoded = lv_encode_str ” BASE64-Encoded String RECEIVING decoded = lv_decode_str. ” Decoded string
WRITE :/ ‘Decoded Sing:’, lv_decode_str COLOR 3.
Here is the program. Execute.
Run.
SAPCODES 
It doesn’t work with special characters, you should use “encode_utf8” first, then “encode_x_base64”
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Its an old post but NEVER encode data as base64 for securitry reason. Thats not save, everyone with a little bit of understanding decodes that stuff online in seconds (google base64 decoder). Its as safe as storing the data in plain text. If you want to encode for security reasons, please use AES 256 bit.
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