Method and apparatus for sample alignment

The invention provides a method for sample alignment and a device for sample alignment, relates to the field of information security, and is beneficial to improving the security of sample alignment. The method comprises the steps that first equipment receives first M bit elements of each hash value in X hash values from second equipment, X is an integer larger than or equal to 1, M is smaller than N, N is the output length of a preset hash algorithm, and N is an integer larger than 1; the first device generates S confused sample data on the basis of the existing Y sample data and performs hash operation on the S confused sample data according to the preset hash algorithm to obtain S hash values, and Y and S are integers greater than or equal to 1; and under the condition that the first M-bit elements of the S hash values are different from the first M-bit elements of each hash value in the X hash values, the first equipment performs sample alignment with the second equipment by adopting the Y pieces of sample